GMDSS通信英语阅读修改版
GMDSS英语阅读练习1
一、缩略语
1、GMDSS
A:Global Maritime Distress and Safety System 全球海上遇险与安全系统
B:Global Maritime Distress and SafeSystem 全球海上遇险与安全系统
C:Global Maritine Distress and Safety System 全球海上遇险与安全系统
D:Global Maritime Distress and Safety System 全球海上遇险系统
2、INMARSA T
A:International Mobile Satellite Organization 国际海事卫星组织
B:International Maritime Satellite Organization 国际移动卫星组织
C:International Maritime Satellite Organization 国家海事卫星组织
D:International Maritime Satellite Organization 国际海事卫星组织
3、POR
A:Pacific Ocean Region 大西洋区
B:Pacific Ocean Region 太平洋区
C:Pacific Ocean Region 印度洋区
D:Pacific Ocean Region 北冰洋区
4、DSC
A:Digital Select Call 数字选择性呼叫
B:Digital Search Call 数字选择性呼叫
C:Digital Selective Call 数字选择性呼叫
D:Digital Searching Call 数字选择性呼叫
5、MSI
A:Maritime Safety Information 海上安全信息
B:Mobile Safety Information 海上安全信息
C:Maritime Safe Information 海上安全信息
D:Maritime Signe Information 海上安全信息
二、单选题
1、Which of the following equipments on board is for the COSPAS-SARSA T system?
A:DSC B:NA VTEX C:VHF D:EPIRB
2、Please choose the INMARSA T-C NCS ID of the W-AOR:
A:044 B:001 C:211 D:144
3、Which service does not the EGC system have？
A:Safety NET B:Fleet NET C:SART D:Sending MSI 4、The VHF CH70 could be used to send ______:
A:FAX B:DSC C:NBDP D:SSB
5、In each NA VTEX message there is a technical code (B1B2B3B4):which character is the station identification ?
A:B1 B:B2 C:B3 D:B3B4
6、The following radio communication systems are used in GMDSS except the INMARSA T system:
A:VHF
B:VHF MF and HF terrestrial systems
C:the COSPAS-ASRSA T system
D:the FLAG SIGNAL systems
7、Which equipment is required to be carried in the all sea areas ?
A:VHF B:MF C:HF D:SES
8、Where is the INMARSA T’S headquarters?
A:China B:The USA
C:the United Kingdom D:Canada
9、The Maritime safety information contains _________:
A:distress message B:Urgency message C:Distress alert
D:Navigational and meteorological warnings
10、Both the satellite communication and terrestrial communications will _________:
A:not be used in the GMDSS
B:be used only for general communications C:be replaced by Morse D:be used in the GMDSS
11、If we pass this test it may be possible for us to obtain
A:The First-class Radioelectronic Certificate Ｂ:The Second-class Radioelectronic Certificate Ｃ:The General Operator’s Certificate D:The Restricted Operator?s Certificate
12、Which of the following statement is correct?
A:2182 KHz is a carrier frequency used for distress and safety communications using radio telegraphy which class of emission is A1A
B:2187:5 KHz is a carrier frequency used for distress and safety calls using digital selective calling:
C:2187:5 KHz is a carrier frequency used for distress and safety calls using narrow-band-direct-printing:
D:2182 KHz is a carrier frequency used for distress and safety traffic using narrow band direct printing:
13、There are VHF equipments and either a satellite EPIRB or a VHF EPIRB on board according to the equipment carriage requirement:Which sea area does the ship sail?
A:A1 B:A2 C:A3 D:A4
14、Which of the following description of usage is suitable for 2174:5KHz frequency?
A:MSI B:NBDP C:DSC D:RT
15、Which of the following description about Sea Area A3 is correct?
A:an area within the radiotelephone coverage of at least one VHF coast station and one MF coast station
B:an area, including Sea Area A1 and A2, within the coverage of an INMARSA T geostationary satellite.
C:An area, excluding Sea Area A1 and A2, within the coverage of an INMARSA T geostationary satellite.
D:An area, excluding Sea Area A1 and A2, within the coverage of an COSPAS—SARSA T
system.
16、In the COSPAS-SARSA T system, there are _______types of beacons at present? A:3 B:2 C:1 D:4 17、The medical message should be preceded by the word ________.
A:OBS B:TMZ C:MEDICO D:NW 18、All the distress message should be preceded by ______.
A:PAN PAN B:SECURITE C:MAYDAY D:MEDICO
19、What final place is a distress call/message routed to?
A:CES B:NCS C:RCC D:MCC
20、The date for entry into full effect for GMDSS is 1st February _______.。
A:1999 B:1992 C:1995 D:1997
三、阅读理解
PASSAGE1.Basic description of DSC:DSC is basically a calling system .Each call consists of a “packet” of digitized information of one of four priorities : Distress , Urgency , Safety , Routine :Message can be routed to “all stations”, to an individual station or to a group of stations, using their Maritime Mobile Selective-call Identify code (MMSI):Distress messages are automatically broadcast to “All stations”. In addition to the MMSI of source and destination stations, information can be conveyed in the DSC message:For example, to aid the Rescue Service, the DSC Distress alert message is configured to contain the following: A\Ship?s identify (the nine digit MMSI) B\Time. C\ Nature of distress (in the form of standard code) D\Ship?s position.Where fitted ship?s officers should ensure they are fully conversant with the procedure for entering the necessary information into DSC equipment:At sea, unless provided automatically from a navigation system, ship?s position should be update at least once during each watch period.
1、At sea, if DSC equipment can’t get ship’s position message from a navigation system automatically, then the position message should be renewed _______.
A:.at least every 4 hours: B:at least every 8 hours C.at least every 12 hours: D:at least every 24 hours.
2、According to the message, distress message can be received by _______.
A:all stations: B:coast stations. C:ship stations:
D:group of specified stations
.
3、Each DSC “packet”have _______ priority(priorities)
A:1 B:2 C:3 D:4
4、Which of the following statement is not true??
A: A DSC message has a MMSI of source station.
B: A DSC message has a MMSI of destination station.
C: A DSC message has a name of source station.
D: A DSC message also has other information for sending round:
Passage2. The NA VTEX receiver is a Narrow Band Direct Printing (NBDP) device operating on the frequency 518Khz, (some equipment can also operate on 490Khz and 4209.5Khz), and is a vital part of the Global Maritime Distress and Safety System (GMDSS).It is automatically receives Maritime Safety Information such as Radio Navigational Warnings, Storm/Gale Warnings, Meteorological Forecasts, Piracy Warnings, Distress Alert etc.The information received is printed
on the receiver?s own paper recorde r roll:Each message begins with starts of message function (ZCZC) followed by a space then four B characters:The First, (B1), identifies the station being received, the second, (B2), identifies the subject i.e:Navigational Warning, Met Forecast etc, and the third and fourth, (B3+B4), form the consecutive number of the message from that station:This followed by the text of the message and ends with an end of message function (NNNN).The NA VTEX system broadcasts COASTAL WARNING which cover the area from the fairway buoy out to 250 nautical miles from the transmitter, the transmission from some transmitters can be received out to 400 nautical miles and even further in unusual propagation conditions.
1、The NA VTEX receiver works on _________.
A:4209.5Khz B:490Khz C:518Khz D:All above.
2、Which character(s) identifies station of NA VTEX?
A.B1 B:B2 C:B3 D:B4
3、Which statement is TRUE?
A:The NA VTEX system is very important to GMDSS.
B:The NA VTEX system is a part of GPS,
C:The NA VTEX system is a part of EGC
D:The NA VTEX system has nothing to do with the GMDSS
4、Which of the following is not TRUE?
A:Each message begins with starts of message function(ZCZC).
B:Each message ends with an end of message function(NNNN).
C:The NA VTEX system can cover the 250 miles from the transmitter.
D:The NA VTEX system can not cover 400 miles from the transmitter.
Passage3. Terrestrial Communications_____LONG-RANGE SERVICE_____Use of HF provides a long-rang service in both the ship-to-shore and shore-to-ship directions:In case covered by INMARSA T it can be used as an alternative to satellite communications and outside these areas it provides the only long-rang communication capability:Frequencies have been designated in the 4,6,8,12 and 16 MHz bands for this service.Digital selective calling (DSC) forms the basis of distress alerting and safety communications:Distress and safety communications following a DSC call can be performed by radiotelephone or NBDP._____MEDIUM-RANGE SERVICE_______A medium-range service is provided on frequencies in the 2 MHz band:In the ship to shore, ship to ship and shore to ship directions 2187.5kHz will be used for distress alerts an safety calls using DSC, and 2182kHz will be used for distress and safety traffic by radiotelephone, includ ing SAR co-ordinatind and on-scene communications:2174.5kHz will be used for radiotelex (NBDP) distress and safety traffic._____SHORT-RANGE SERVICE___VHF provides short-range service on the frequencies: A\156.525MHz (Channel 70) for distress and safety calls using DSC, and B\156.8MHz(Channel 16) for distress and safety traffic by radiotelephone, including SAR co-ordinating and on-sense communications.
1、In GMDSS system, terrestrial communications can be divided into ____parts.
A:.one B:Two C:Three D:four
2、2187.5kHz can be used for________.distress and safety calls on radiotelex system in MEDIUM-RANGE service.
A:distress and safety calls on digital selective calling system in MEDIUM-RANGE service.
B:distress and safety calls on radiotelex system in LONG-RANG service.
C:distress and safety calls on radiotelex system in SHORT-RANGE service.
D:distress and safety calls on telex system in satellite service.
3、VHF CH 16 is a distress and safety frequency in short-rang service, so it should be used for ______.
A:distress and safety radiotelex calls in short-rang service
B:distress and safety DSC calls in short-rang service
C:distress and safety radiotelex calls in MEDIUM-RANG service
D:distress and safety radiotelephone calls in short-rang service
4、The HF can provide the service which is ____________.
A:not covered by INMARS A T:
B: only Short-Range Service . C: only Medium-Range Service D: Covered by INMARSA T.
5、Which of the following is true?
A:Digital selective calling (DSC) follows a telephone call.
B:Distress and safety communications by radiotelephone or NBDP follows a DSC distress call. C:Digital selective calling (DSC) follows NBDP:traffic.
D:Radio telephone alert forms the basis of distress alerting and safety communications: Passage4. Terrestrial Communications_____LONG-RANGE SERVICE_____Use of HF provides a long-rang service in both the ship-to-shore and shore-to-ship directions:In case covered by INMARSA T it can be used as an alternative to satellite communications and outside these areas it provides the only long-rang communication capability:Frequencies have been designated in the 4,6,8,12 and 16 MHz bands for this service.Digital selective calling (DSC) forms the basis of distress alerting and safety communications:Distress and safety communications following a DSC call can be performed by radiotelephone or NBDP._____MEDIUM-RANGE SERVICE_______A medium-range service is provided on frequencies in the 2 MHz band:In the ship to shore, ship to ship and shore to ship directions 2187.5kHz will be used for distress alerts an safety calls using DSC, and 2182kHz will be used for distress and safety traffic by radiotelephone, including SAR co-ordinatind and on-scene communications:2174.5kHz will be used for radiotelex (NBDP) distress and safety traffic._____SHORT-RANGE SERVICE___VHF provides short-range service on the frequencies: A\156.525MHz (Channel 70) for distress and safety calls using DSC, and B\156.8MHz(Channel 16) for distress and safety traffic by radiotelephone, including SAR co-ordinating and on-sense communications.
1、The acknowledgement of a DSC test call is transmitted as follows:
A:first, you should tune a transmitter to 2187.5 kHz.
B:then key in or select “test call acknowledgement”.
C:key in or select 9-digit identity of the calling ship station.
D:all above.
2、The section 6 describing is about .
A:HF B:MF C:VHF
D:All above
3、Ships in distress may transmit the DSC distress alert on .
A:Only a HF band B:Only two HF bands C:A number of HF bands D:A and B
4、Who shall transmit DSC acknowledgement on all HF DSC distress channels on which the DSC alert was received?
A:a ship station B:a coast station C:many ship stations D:many coast station
5、The DSC distress acknowledgement should be received by .
A:ship in distress B:rescue ship C:all ships which received the DSC alert: D:A and C
6、The distress traffic should be initiated on the appropriate .
A:radiotelephony distress traffic channel: B:NBDP distress traffic channel C:A or B
D:DSC distress calling channel
7、Which of the following statement is not true?
A:The distress traffic should proceed in the same band in which the DSC alert was received. B:Radiotelephone may be used for the distress communication.
C:NBDP may be used for the distress traffic.
D:NBDP should not be used for the distress traffic.
GMDSS英语阅读练习2
一、缩略语
1、EPIRB
A: Urgency Position Indicating Radio Beacon 紧急无线电示位标
B:Emergency Position Indicating Radio Beacon 紧急无线电示位标
C:Emergency Positive Indicating Radio Beacon 紧急无线电示位标
D:Emergency Position Identification Radio Beacon 紧急无线电示位标
2、LES
A: Lord Earth Station 陆地地球站
B:Land Earth Station 陆地地球站
C:Land Earth State 陆地地球站
D:Land Earth Station 移动地球站
3、MSI
A: Maritime Safety Information 海上安全信息
B:Maritine Safety Information 海上安全信息
C:Maritime Safe Information 海上安全信息
D:Maritime Safety Identification 海上安全识别
4、ETA
A: Estimate Time of Arrival 预计抵达时间
B:Estimated Time of Arrival 预计离港时间
C:Estimated Time of Arrival 预计抵达时间
D:Estimated Timing of Arrival 预计抵达时间
5、IMO
A: International Maritime Organization 国际海事组织
B:Internation Maritime Organization 国际海事组织
C:International Mobile Organization 国移动组织
D:International Maritime Organize 国际海事组织
二、单选题
1、Which definition’s meaning is the “Telephone using phase modulation”:
A: G3E B: F3E C: G2B D: F1B
2、The following number is INMARSA T-C SES’s number, which one is Chinese vessel’s? A: 411230375 B: 441263826 C: 421330313 D: 430961627
3、When must a ship be fitted with NA VTEX receiver?
A: 01 FEB 1992 B: 01 AUG 1993 C: 01 FEB 1999 D: 01 FEB 1995 4、What kinds of ships may not use SOLAS convention?
A: 300T:G:T upward B: Passenger ships C: 300T:G:T cargo ship D: 300T:G:T below
5、The frequency 156:525MHz and 156:8MHz should be in the band of ________:
A: LF B: MF C: HF D: VHF
6、The broadcast of MSI will be made ________
A:continuously
B:on terrestrial communication system C:on satellite communication system D:Both B and C
7、What is the main means in the GMDSS for locating ship in distress or their survival craft? A: SART B: DSC C: VHF D: SSB
8、The radio equipment to be carried on board GMDSS ship depends upon _____________
A:the tonnage of the ship B:the type of the ship C:the sea area in which the ship operates D:the horse power of the ship
9、“AMENED ETA PILOT STA TION”means:
A:ETA pilot station has been changed
B: ETA pilot station will be given afterwards C:ETA pilot station was not given D:ETA pilot station is given
10、What does the abbreviation “VHF”stand for?
A:V essel?s Hoisting Flag B:V ery High Safety C:V essel?s Homing Frequency D:V ery High Frequency
11、:”_________”should be used during the poor visibility if the radar’s screen shows heavy sea returns
A: Gain control B: Brilliant Control C: Anti- clutter control D: Sweep Intercept
12、Which of the following indicates that a station transmit concerning navigation safety messages by radio telephone?
A: TTT
B: The spoken word pan C: The spoken word SECURITY D: XXX
13、Which of the following indicates a grave and imminent danger requesting immediate assistance on the radio telephone?
A: SOS B:MAYDAY C:SECURITY D:PAN
14、GMDSS is the abbreviation of
A:The Global Maritime Distress and Safety System
B:The Global Mariners Distress and Safety System
C:The Global Marines Distress and Safe System
D:The Global Marines Disco and Safe System
15、If we pass the exam, It may be possible for us to obtain___________
A:the First-class Radioelectronic Certificate
B:the second-class Radioelectronic Certificate
C:the General Operator?s Certificate
D:the Restricted Operator?s Certificate
16、Which of the following function that is not fulfilled by Inmarsat-C?
A: Distress alerting
B: Store-and-forward messaging C: Receipt ofEGC messages D: Telephone communication
17、The EGC service is composed of:
A: SafetyNET service B: FleetNET service C:NA VTEX service D: All of the above
18、Which of the following are included in mandatory services of Inmarsat-C?
A: FleetNET Service B: Data Reporting C: SafetyNET Service D: Polling Service
19、Which of the following is not included in Terrestrial communications?
A: Long-Range service B: Medium-Range service C: Short-Range service D: INMARSA T service
20、All the distress message should be preceded by :
A: PAN PAN B: SECURITE C: MAYDAY D: MEDICO
三、阅读理解
PASSAGE1:The IMO also introduced digital selective calling (DSC) on VHF, MF and HF maritime radios as part of the GMDSS system: DSC is primarily intended to initiate ship/ship, ship/shore, and shore/ship radiotelephone and MF/HF radiotelex calls: DSC calls can also be made to individual ships or groups of ships: DSC distress alerts, which consist of a preformatted distress message, are used initiate emergency communications with ships and rescue coordination centers: When fully implemented, DSC will eliminate the need for persons on a ship's bridge or on shore to continuously guard radio receivers on voice radio channels, including VHF channel 16 (156:8 MHz) and 2182 kHz now used for distress, safety and calling: A listening watch aboard GMDSS-equipped ships on 2182 kHz ended on 1 February 1999, and on VHF channel 16 is scheduled to end on 1 February 2005: We urge that the DSC-equipped VHF and MF/HF radios be externally connected to a satellite navigation receiver: That connection will ensure accurate location information is sent to a rescue coordination center if a distress alert is ever transmitted: FCC regulations actually require that ship's position be manually entered into the radio every four hours on ships required to carry GMDSS equipment, while that ship is underway (47 CFR 80:1073): Once SOLAS ships are allowed to disband watch-keeping on VHF and MF radiotelephone channels, other ships are going to need DSC-equipped radios to contact these ships, particularly in a passing situation, especially when outside U:S: waters: We believe VHF, MF and HF radiotelephone equipment carried on ships should include a DSC capability as a matter of safety: To achieve this, the FCC requires that all new VHF and MF/HF maritime radiotelephones type accepted after June 1999 to have at least a basic DSC capability: VHF digital selective calling also has other capabilities beyond those required for the GMDSS: The Coast Guard uses this system to track vessels in Prince William Sound, Alaska, V essel Traffic Service: IMO and the USCG also plan to require ships carry a Universal Automatic Identification System, which will be DSC-compatible: Countries having a GMDSS A1 Area will be able to identify and track AIS(自动识别系统)-equipped vessels in its waters without any additional radio equipment:
1、Which of the following is the best answering?
A: Only VHF equipment can used DSC:
B: Only MF equipment can used DSC
C: Only HF equipment can used DSC:
D: DSC will use on VHF, MF and HF equipment
2、According to this message, which of the following is wrong
A: When fully implemented, for persons to continuously guard will eliminate
B: DSC is used for watching
C: DSC is only used for watching:
D: DSC is used to initiate emergency communication:
3、According to this message, the watch-keeping of VHF CH16 will be ended _______:
A: on 1 February 1999: B: on 1 February 2005: C: on 1 February 2000: D: on 1 February 2010:
4、The writer intends that the VHF/MF/HF radio equipment _______:
A:should have its own satellite navigator;
B:have nothing to do with the satellite navigation system;
C:should be connected to a satellite navigator:
D:should change the ship?s position manually every hours:
5、Which statement is not correct?
A:DSC can initiate radio-telephone and radiotelex calls on VHF/MF/HF bands: B:DSC can initiate radio-telephone calls on VHF/MF/HF bands:
C:DSC can initiate radiotelex calls on MF/HF bands:
D:DSC can initiate VHF/MF/HF radio-telephone and MF/HF radiotelex calls: 6、The AIS equipment will be used to ________:
A:identify and track vessels in A1sea area;
B: identify and track vessels in A2sea area;
C:identify and track vessels in A3sea area;
D:identify and track vessels in A4sea area:
7、The meaning of word “radios”in the passage is :
A: radio equipments B: radio waves C: radio programs D: no meaning
Passage2.Satellite systems operated by the International Mobile Satellite Organization (Inmarsat), are also important elements of the GMDSS: Three types of Inmarsat ship earth station terminals are recognized by the GMDSS: the Inmarsat A, B and C: The Inmarsat A and B, an updated version of the A, provide ship/shore, ship/ship and shore/ship telephone, telex and high-speed data services, including a distress priority telephone and telex service to and from rescue coordination centers: The Inmarsat C provides ship/shore, shore/ship and ship/ship store-and-forward data and telex messaging, the capability for sending preformatted distress messages to a rescue coordination center, and the SafetyNET service: The Inmarsat C SafetyNET service is a satellite-based worldwide maritime safety information broadcast service of high seas weather warnings, NA V AREA navigational warnings, radionavigation warnings, ice reports and warnings generated by the USCG-conducted International Ice Patrol, and other similar information not provided by NA VTEX: SafetyNET works similarly to NA VTEX in areas outside NA VTEX coverage: Inmarsat C equipment is relatively small and lightweight, and costs much less than an
Inmarsat A or B: Inmarsat A and B ship earth stations require relatively large gyro-stabilized antennas; the antenna size of the Inmarsat C is much smaller: Inmarsat also operates an EPIRB system, the Inmarsat L, which is similar to that operated by COSPAS-SARSA T: Under a cooperative agreement with the National Oceanic and Atmospheric Administration (NOAA), combined meteorological observations and AMVER reports can now be sent to both the USCG AMVER Center, and NOAA, using an Inmarsat C ship earth earth station, at no charge: There is also no charge to register for this service and to receive the necessary Inmarsat C software: For more information, see the NOAA Shipboard Environmental (data) Acquisition System, or SEAS: We strongly urge that Inmarsat C equipment have an integral satellite navigation receiver, or be externally connected to a satellite navigation receiver: That connection will ensure accurate location information to be sent to a rescue coordination center if a distress alert is ever transmitted: 1、According to the passage, which type of Inmarsat SES terminals are approved by the GMDSS?
A:INMARSA T-C; B:INMARSA T-M; C:INMARSA T MINI-M; D:INMARSA T-P
2、The writer suggests that INMARSA T-C ship earth stations ______
A:should have an satellite navigator;
B:should be connected to a satellite navigation receiver
C:A & B D:A or B
3、The SafetyNET (satellite-based worldwide maritime safety information broadcast service) service is provided by _____________
A:INMARSA T-Asystem B:INMARSA T-B system C:INMARSA T-C system D:INMARSA T-M system
4、Which ship earth station does not requires relatively large gyro-stabilized antenna?
A:INMARSA T-A B:INMARSA T-B C:INMARSA T-C D:Both A & B
5、The meaning of phrase “store-and-forward”in the passage is
A: first memorize, then relay B: memorizing message C: directly send message D: store a file
6、INMARSA T-L is
A: INMARSA T-C system B: INMARSA T-B C: EPIRB system of INMARSA T D: COSPAS-SARSA T
7、According to the passage, which of the following is not true?
A: a meteorological observation can be transmited to NOAA with Inmarsat-C SES at free of charge
B: A AMVER reports can be transmited to the USCG AMVER Center at charge
C: It is no charge to register for AMVER service
D: It is no charge to receive Inmarsat-C software
Passage3.The GMDSS installation on ships include one or more search and rescue radar transponders (SART), devices which are used to locate survival craft or distressed vessels by creating a series of dots on a rescuing ship's 3 cm radar display: The detection range between these devices and ships, dependent upon the height of the ship's radar mast and the height of the SART, is normally about eight nautical miles: Note that a marine radar may not detect a SART even within this distance, if the radar settings are not optimized for SART detection
1、Which statement is true according to the passage?
A:SART can send alert signals to RCC through INMARSA T system;
B:SART can send alert signals to RCC through COSPAS-SARSA T system;
C:SART can send alert signals to RCC through VHF/HF/MF communication system; D:SART is used to locate survival craft or distressed vessels
2、The detected distance of SART is determined by_________
A、The position of the SART
B、The frequency of the marine radar
C、The height of the radar antenna and the SART
D、The frequency of the SART
3、If the radar settings are not optimized for SART detection，maybe
A、can not see returns of SART on radar screen
B、can see returns of SART on radar screen
C、affect function of SART
D、be independent of radar detecting
Passage4.Radar should not be regarded as more than an aid to the detection of other vessel, and collisions in poor visibility can be averted for certain only if the information provided by the radar set is correctly interpreted。It is insufficient merely to detect the presence of another vessel; its bearing and range must be noted from time to time before risk of collision can be ascertained。Only after early plotting of the ranges and bearings can a clear appreciation of the developing collision risk be obtained。The information to be obtained from a plot would in many cases, be of inestimable value before taking any necessary avoiding action。It will always be necessary in restricted visibility to go to a moderate speed, having regard to the existing circumstances and conditions。
1、In restricted visibility, the vessel should
A、proceed at a moderate speed
B、stop at once
C、maintain its normal speed
D、take necessary action to avoid collisio
2、Collisions in poor visibility can be averted for certain only if
A、 a vessel can change directions
B、the information detected by radar is correctly explained
C、ample alteration of course has been done
D、none of the above 3、In most cases, the information from a plot is of
A、no great value
B、decisive role
C、inestimable value
D、little significance
GMDSS英语阅读练习3
一、缩略语
1、POR
Pacific Ocean Region 太平洋区
Pacific Ocean Region 太平洋
Pacific Ocean Region 大西洋区
Pacific Oceanic Region 太平洋区
2、PSTN
Public Switching Telephone Network 公共电话交换网Public Switched Telex Network 公共电话交换网Public Switched Telephone Network 公共电话交换网
Public Switched Telephone Network 公共电话交换中心3、RCC
Rescue Coordinating Center 救助协调中心
Rescue Coordinating Center 救助协调中心
Rescue Coordination Center 救助协调中心
Rescue Coorperating Center 救助协调中心
4、IMN
Inmarsat Mobile Number 卫星移动识别码
Inmarsat Maritime Number 卫星海事识别码International Mobile Number 国际移动识别码International Maritime Number 国际海事识别码
5、ISDN
Integrated Service Digital Network 综合业务数字网Integrated Service Digital Network 专用业务数字网Integrated Service Data Network 综合业务数据网Integrated Service Data Network 专用业务数字网
二、单选题
1、Terrestrial traffic system has the following equipment. ( )
A. INMARSA T-A
B. INMARSA T-B
C. INMARSA T-B
D. VHF device AND MF/HF equipment
2、An “area call”is usually applied to . .
A：alert all ships in a limited sea area
B：all ships
C. send the alert to the ships in vicinity of distress incident
D. several ships
3、What is the telex number of IOR in INMARSA T?
A. 581
B. 871
C. 583
D. 873
4、Which expression has the different meaning from “entry into force”? D. coming into Chinese
A. coming into effect
B. moving to full effect
C. being based on force
D. coming into Chinese
5、Which of the following is not a DSC calling content ?
A. the ID of calling ship
B. the name of calling ship
C. category of priority
D. work frequency
6、COSPAS-SARSA T is intended to be used for .
A. distress alerting
B. locating distress beacon
C. storing distress signal
D. A and B
7、The VHF CH70 could be used to send _________.
A. FAX
B. TELEX
C. DSC
D. E-mail
8、Which of the following frequency is NOT used for GMDSS?
A.2182KHz
B.500KHz
C.518KHz
D.2187.5MHz
9、The Maritime safety information contains _______.
A.Distress message
B. Ordinary message
C. Distress alert
D. Navigational warnings
10、What kind of transmission mode will be used in SSB voice communication?
A. CW
B. A2H
C. A1A
D. J3E
11、Which equipment is ship terminal equipment of COSPAS-SARSA T system?
A. DSC
B.SSB
C.EPIRB
D.NBDP
12、The broadcast of MSI will be made __________.
A.continuously
B. on terrestrial system
C.on satellite system
D. Both B and C
13、The VHF CH16 is called ________.l
A. common channel for pilot service
B. aircraft calling channe
C. international distress and safety channel
D. navigation safety communication channel
14、What is the main means in the GMDSS for locating ship in distress or their survival craft?
A. SART
B. DSC
C. VHF
D. SSB
15、The sea area A3 will be within the coverage of
A.INMARSA T satellites
B. MF radio communication
C. VHF radio communication
D. all above
16、Which of the following frequencies is as international distress and safety frequencies on MF for radio telephony?
A.2187.5 KHz
B.2174.5 KHz
C.2177.0KHz
D.2182KHz
17、How many frequencies designated for DSC international distress and safety Frequencies on HF band are_____.
A. 6
B. 3
C. 4
D.5
18、Urgency message should be preceded by .
A. PAN PAN
B. SECURITE
C. MAYDAY
D. MEDICO
19、Which of the following statement is correct?
A. 490 KHz is used exclusively for MSI through the NA VTEX system.
B. 518 KHz is used exclusively for MSI through the NA VTEX system.
C. 2174.5KHz is used exclusively for MSI through the NA VTEX system.
D. 8376.5KHz is used extensively for MSI through the NA VTEX system.
20、The frequency 2174.5kHz is ________.
A. DSC distress and safety call channel.
B. MF radiotelex distress and safety traffic frequency.
C.telephone distress and safety communication channel.
D. telephone channel.
三、阅读理解
PASSAGE1.
The Inmarsat Fleet service is based on Geo-stationary 3rd generation satellites situated above the equator. Geo-stationary means that the satellites are always located in the same position, i.e. they rotate at the same speed as that of the earth. Each satellite covers a certain area (footprint) and supports a number of powerful spot-beams making the service available in virtually all ocean regions on the earth between approximately 70°N and 70°S.The 4 Geo-Stationary Inmarsat Satellites.
The satellites are your connection to the worldwide networks, and they are managed by the
Network Co-ordination Stations (NCSs), run by Inmarsat. The primary functions of the NCSs are to constantly keep track of which terminals are logged on to the system, and assign a free channel when a call is made.
The gateway between the public network and the satellites are operated by Land Earth Stations (LES). The LES are run by different operators around the world.
The fleet services are prepared for operation with the next generation of Inmarsat satellites(Inm-IV) expected in 2005. The service supported by the Inmarsat Fleet encompasses. 1、Where is the satellites orbit of Inmarsat-F System situated?
A. Above the Equator.
B. near Polar.
C. 23 oN.
D. 23 oS.
2、he satellites run by Inmarsat are managed by the ( )?
A. LES.
B. IMO.
C. NCSs.
D. RCC
3、Which of the following service is not the high speed service?
A. Speech.
B. 3.1 kHz audio.
C. FAX.
D. 56 Kbit/s data.
4、Which statement is not true according to the passage?
A. To use each of the Inmarsat Fleet services, it is necessary to have at least one Inmarsat Mobile Number (IMN).
B. If the satellite region/areas is not known for the terminal the "country" code for a terminal is 870.
C. Mini-M voice and Mini-M fax are both low speed service.
D. Each satellite of Inmarsat covers a certain area on the earth between approximately 60°N and 60°S.
5、Which generation of Inmarsat satellite is expected in 2005?
A. III
B. IV
C. V
D. None of the above.
PASSAGE2.
The Handset is the primary interface for the Capsat Fleet system. It enables to user to dial number, it displays error and status message, and it is used to configure the transceiver.
The Handset is divided into 3 distinct and inter-working sections.
1. The first is the liquid Crystal Display (LCD) and Light Emitting Diodes (LED) section. This section gives the user visual indications about the operation and status of the system.
2. The second is the Function buttons section. This section enables the user to interact with the software menu system of the transceiver. The Function buttons enable the user to enter the menu system of the transceiver and change various settings.
3. The third is the Alpha-Numeric section. This section enables the user to dial and perform data entry functions into the transceiver. The keypad can be in normal (numeric) mode or alpha mode. Normal mode is used to enter digits (phone numbers) whereas alpha mode is used to enter letters (names in the phone book).
Access to some of the terminals functionality is restricted by PIN code. Two different kinds of User PIN codes are used in the system: One Pin for the Super User and one for the Service User. Common for both Pin types is that the length must be between 4 and 8 digits and that they contain digits between 0 and 9. The normal everyday user (Normal User) can make and receive calls, access the phonebook, chose an ocean region and a default LES, read the alarm log and status and make a call from the Helpdesk. For a description of these functions see section 4.1 Menu System.
All other setup has to be carried out by a Super User or a Service User
1、Which LED will illuminate when the system has the same speed with a satellite?
A. POWER LED.
B. ALARM LED.
C. CONNECTION LE
D.
D. SYNCHRONIZA TION.
2、Which section enables the user to interact with the software menu system of the transceiver?
A. Function buttons.
B. Alpha-Numeric.
C. Liquid Crystal Display (LCD).
D. Light Emitting Diodes (LED).
3、Which of the following PIN code possibly is correct?
A. 239.
B. 857523292.
C. 121.
D. 2329.
4、How many kinds of the user the PIN code are used in the fleet77 system?
A. 5.
B. 3.
C. 4.
D. 2
5、Which of the following is not true?
A.Two different kinds of User PIN codes are used in the system
B.Access to some of the terminals functionality is restricted by PIN code
C.The Handset is the primary interface for the Capsat Fleet system.
D.The Handset is divided into more than 3 distinct and inter-working sections.
PASSAGE3.
Distress Alerting is available on all maritime SESs enabling the SES in distress to send distress information on the signaling channel to MRCC for the required actions. The distress alerting information includes the SES identity (Inmarsat-C Mobile Number), date, latitude, longitude, course, speed, time of position update and nature of distress. The position is updated either from integrated or external GPS receiver or manually from a keyboard.
Distress Priority message is prepared in the SES text editor and sent on the messaging channel to MRCC regardless of the address given. The message may contain more detailed distress related information, eg. distress circumstances and assistance required.
The following services which relate directly to Distress and Safety are offered by all CESs as specified in the Radio Regulations under the GMDSS.
2 digit code Service Remarks
32 Medical Advice Use this code to obtain medical advice. Some CES have direct connections with local hospitals when this code is used.
38 Medical Assistance This code should be used if the condition of an ill or injured person on board the vessel requires urgent evacuation ashore or the services of a doctor aboard the vessel. This code will ensure that the call is routed to the appropriate agency/authority ashore to deal with the situation.
39 Maritime Assistance This code should be used to obtain Maritime assistance if the vessel requires assistance or in cases of oil pollution, etc.
41 Meteorological Reports This code should be used by weather observing vessels to send their weather observations. In most cases where this service is available the service is free of charge to the vessel, the National weather authority paying the relevant charges.
42 Navigational Hazards This code provides a connection to a navigational office
and Warnings for transmission of information from the vessel on any Warnings hazards which could endanger safety of navigation.
43 Ship Position reports This code provides a connection to an appropriate national or
international centre collecting ship movement information for search and rescue (or other) purposes, e.g. AMVER, AUSREP etc.
See ALRS V olume 1 for a comprehensive list of the 2 digit codes relating to other services which are currently available through some or all CESs.
1、Which information is not included in the distress alerting information?
A. the SES identity
B. the speed of the ship in distress
C. nature of distress
D. the gross tonnage of the ship
2、The position of the ship can be updated from ( ).
A. integrated GPS receiver
B. external GPS receiver the keyboard D. all of above
3、Which code should be used if the ship needs the services of a doctor aboard the vessel?
A. 32
B. 38
C. 39
D. 41
4、Which code should be used by weather observing vessels to send their weather observations?
A. 38
B. 39
C. 41
D. 42
5、Which code should be used if the ship asking for sailing assistance?
A. 38
B. 3
C. 41
D. 42
PASSAGE4.
The Space Segment is provided by Inmarsat, and consists of four primary communications satellites, with five backup satellites in orbit, ready to be used if necessary.
Each satellite is in a geostationary orbit in space. In this orbit, each satellite moves at exactly the same rate as the rotation of the earth, and so remains in the same relative position to the earth, above the earth's equator. In this position, antennas on the earth can easily maintain communications with the satellite. The satellite's solar panels provide it with electrical power to perform its functions.
The Inmarsat satellites are controlled from the Satellite Control Centre (SCC) based in the Inmarsat Headquarters in London, UK.
Each satellite has a coverage area (also known as its footprint), which is defined as the area on the earth's surface (sea and / or land) within which a mobile or fixed antenna can obtain line-of-sight communications with the satellite. There are four satellites coverage areas, corresponding to the four Ocean Regions: Atlantic Ocean Region-East (AOR-East). Atlantic Ocean Region-West (AOR-West). Indian Ocean Region (IOR). Pacific Ocean Region (POR).
The Ground Segment comprises a global network of Land Earth Stations (LESs), Network Coordination Stations (NCSs), and a Network Operations Centre (NOC).
Each LES provides a link between the satellites and the national/international telecommunications networks. The large antennas used by the LESs to communicate with the satellite for its Ocean Region are capable of handling many calls simultaneously to and from the MESs.
A LES Operator is typically a large telecommunications company, which can provide a wide range of communications services to the MESs communicating through the LES
1、Which of the following function is not fulfilled by Inmarsat-C?
A. EGC
B. RT
C. FAX
D. TELEX
2、The EGC service is composed of ( ).
A. safety net
B. fleet net
C. data report
D. A&B
3、Which service is used to broadcast Maritime Safety Information (MSI) to ships via Inmarsat-C.
A. SafetyNET
B. NA VTEX
C. HF NBDP
D. FleetNet
4、Inmarsat-C MESs operate at 600 bit/s and not provide access to ( ).
A. the international telex/telex networks
B. electronic mail services
C. terrestrial cellular system
D. computer data bases
5、Which service is not belong to Inmarsat-C system
A. EMAIL
B.TELEX
C.TWO DIGITAL SERVICE
D.INTERNET CONNECTIO
GMDSS英语阅读练习4
一、缩略语
1、ETA
Estimate Time of Arrival预计抵达时间Estimated Time of Arrival预计抵达时间Estimating Time of Arrival预计抵达时间Estimated Time of Arriving预计抵达时间2、MF
Medium Frequency 中频Medium Frequency 高频Medium Frequency 甚高频Medium Frequency 射频
3、MMSI
Maritime Mobile System Identification 海上移动系统识别Maritime Mobile System Identity 海上移动系统识别Maritime Mobile Service Identity 海上移动业务识别Maritime Mobile Service Identification海上移动业务识别
4、NCC
Network Coorperation Center网络协调中心Network Coordination Center网络协作中心Network Coorperation Center网络协调中心Network Coordination Center网络协调中心5、SSB
Signal Side Band 单边带Single Side Band 单边带Signale Side Band 单边带Single Slide Band 单边带
二、单选题
1、Which of the following equipments on board is for the COSPAS-SARSA T system?
A:DSC B:NA VTEX C:VHF D:EPIRB
2、Please choose the INMARSA T-C NCS ID of the W-AOR:
A:044 B:001 C:211 D:144
3、Which service does not the EGC system have?
A:Safety NET B:Fleet NET C:SART D:Sending MSI 4、The VHF CH70 could be used to send ______:
A:FAX B:DSC C:NBDP D:SSB
5、In each NA VTEX message there is a technical code (B1B2B3B4):which character is the station identification ?
A:B1 B:B2 C:B3 D:B3B4
6、The following radio communication systems are used in GMDSS except the INMARSA T system:
A:VHF
B:VHF MF and HF terrestrial systems C:the COSPAS-ASRSA T system D:the FLAG SIGNAL systems
7、Which equipment is required to be carried in the all sea areas ?
A:VHF B:MF C:HF D:SES 8、Where is the INMARSA T’S headquarters?
A:China B:The U:S:A C:the United Kingdom D:Canada
9、The Maritime safety information contains _________:
A:distress message B:Urgency message C:Distress alert
D:Navigational and meteorological warnings
10、Both the satellite communication and terrestrial communications will _________:
A:not be used in the GMDSS
B:be used only for general communications C:be replaced by Morse D:be used in the GMDSS
11、If we pass this test it may be possible for us to obtain
A:The First-class Radioelectronic Certificate B:The Second-class Radioelectronic Certificate C:The General Operator?s Certificate D:The Restricted Operator?s Certificate
12、Which of the following statement is correct?A:2182 KHz is a carrier frequency used for distress and safety communications using radio telegraphy which class of emission is A1
A:
B:2187:5 KHz is a carrier frequency used for distress and safety calls using digital selective calling:
C:2187:5 KHz is a carrier frequency used for distress and safety calls using narrow-band-direct-printing:
D:2182 KHz is a carrier frequency used for distress and safety traffic using narrow band direct printing:
13、There are VHF equipments and either a satellite EPIRB or a VHF EPIRB on board according to the equipment carriage requirement:Which sea area does the ship sail?
A:A1 B:A2 C:A3 D:A4
14、Which of the following description of usage is suitable for 2174:5KHz frequency?
A:MSI B:NBDP C:DSC D:RT
15、Which of the following description about Sea Area A3 is correct?
A:an area within the radiotelephone coverage of at least one VHF coast station and one MF coast station
B:an area, including Sea Area A1 and A2, within the coverage of an INMARSA T geostationary satellite.
C:An area, excluding Sea Area A1 and A2, within the coverage of an INMARSA T geostationary satellite.
D:An area, excluding Sea Area A1 and A2, within the coverage of an COSPAS—SARSA T system.
16、In the COSPAS-SARSA T system, there are _______types of beacons at present?
A:3 B:2 C:1 D:4
17、The medical message should be preceded by the word ________.
A:OBS B:TMZ C:MEDICO D:NW
18、All the distress message should be preceded by ______.
A:PAN PAN B:SECURITE C:MAYDAY D:MEDICO
19、What final place is a distress call/message routed to?
A:CES B:NCS C:RCC D:MCC
20、The date for entry into full effect for GMDSS is 1st February _______.。
A:1999 B:1992 C:1995 D:1997
三、阅读理解
PASSAGE1.
The Inmarsat system provides priority access to satellite communications channels in emergency situations. Each MES is capable of initiating a request message with distress priority. Any request message with a distress priority indication is automatically recognized at the LES and a satellite channel is instantly assigned. If all satellite channels happen to be busy, one of them will be pre-empted and allocated to the MES which initiated the distress priority call. The processing of such calls is completely automatic and does not involve any human intervention. The LES personnel, however, are notified of the reception and passing through of a distress priority message by audio/visual alarms.
To ensure the correct treatment of distress priority request the NCS in each ocean region automatically monitors the processing of such calls by all other LESs in that region. In the event that any anomalies in processing are detected, the NCS will take appropriate action for the establishment of the end-to-end connections. In addition, the monitoring NCS also checks the LES identity contained in the distress priority message and automatically accepts the call if an identity of a non-operational LES has been detected (which may happen due to operator error aboard the vessel in distress).
The distress priority applies not only with respect to satellite channels but also to the automatic routing of the call to the appropriate rescue authority. Each LES in the system is required to provide reliable telephone and telex interconnection with a rescue coordination centre (RCC). These national rescue centers are usually known as associated RCCs. The means of LES-RCC interconnection may vary from country to country and may include use of dedicated lines or public switched networks. Thus, any distress priority request message received at the LES is automatically processed and passed to the associated RCC. Some LESs, due to national considerations, pass distress priority messages to special operators, who are responsible for the subsequent routing of the call to the appropriate RCC or provide an option which allows the shipboard operator to contact any RCC when a satellite channel has been assigned on the distress priority basis.
The initiation of a distress priority message in most MESs is made simple for ship crew members by provision of a distress button or code in the MES. On activation of this button, the equipment instantaneously transmits a distress priority alert. This single operation, a push of the distress button provides automatic, direct and assured connection to a competent rescue authority. This avoids the need for the MES operator to select or key the telex or telephone number of the RCC thereby eliminating possible human error. The establishment of this end-to-end connection, being completely automatic and on a priority basis, takes only a few seconds.
1、What will happen when the ship in distress send alert via satellite, if all satellite channels are busy?
A. The ship in distress needs waiting for several minutes.
B. One of busy channels will be pre-empted and allocated to the MES.
C. A special channel will be used.
D. The distress and safety channels will be used.
2、What will the NCS do to deal with the distress priority call, if an identity of a non-operational LES is detected.
A. relay the call
B. neglect the call
C. automatically accepts the call
D. communicate with the calling LES
3、Any distress priority request message received at the LES will be ( ).
A. automatically processed
B. passed to the associated RCC
C. passed to special operators
D. A&B
4、Which of the following statements is not correct according to this passage?
A. The monitoring NCS will check the LES identity contained in the distress priority message.
B. The initiation of a distress priority message in is usually rnade by a distress button.
C. Each MES is capable of initiating a request message with distress priority.
D. The RCC will automatically accepts the distress priority call, if an identity of a non-operational LES has been detected.
5、If you were in distress in the area of south China sea, which RCC should be connected to provide help.
A. FRANCE RCC
B. USCG
C. SINGAPORE RCC
D.AUSTRALIA RCC
PASSAGE2.
To operate any Inmarsat equipment is it essential to acquire the satellite signal (Common Signaling Channel), and "lock" on to that signal before the equipment can operate. In principle, the satellite has to be "acquired" either manually or automatically by pointing the antenna accurately towards the satellite for the chosen Ocean Region.
Inmarsat-C equipment uses a small omni-directional type of antenna which only requires an unobstructed line-of-sight view of the satellite.
Inmarsat-A, B and M Ship Earth Stations use high gain parabolic dish or phased array antennas which must be pointed at the required satellite quite precisely. Such antennas must be steered and gyro-stabilized against the ship's motion. The ship's gyro input is fed into the Ship Earth Station and allows the antenna to remain pointed at the satellite while the ship is moving.
A manual means of antenna adjustment is usually available by which the azimuth and elevation of the antenna can be altered to "aim" at the satellite. The beamwidth of a typical antenna is wide enough that the antenna only needs to "see" the signal as the antenna is manually aimed towards the satellite for the terminal to acquire the common signaling channel signal. Once the equipment has achieved an initial coarse acquisition of the satellite, the electronic circuits within the equipment, (step track circuits) perform the fine adjustment to obtain the strongest signal and lock on to the satellite.
Most Ship Earth Stations are able to adjust their antennas to find the satellite automatically after input of the ship's latitude and longitude. Where the ship's navigational system is linked directly to the terminal, the entire satellite acquisition sequence may be programmed to take place automatically at switch on. The full automated acquisition sequence may take several minutes to complete properly.
In the event that the required satellite has to be acquired manually, the first step is to determine the
新编gmdss英语阅读试题.doc
英语阅读 一.INTRODUCTION 1.Vessels operating in which sea area(s) are required to carry either INMARSAT or HF equipment or combination thereof under GMDSS? A.A1 and A 2 B. A3 C. A4 D.A3andA4 2.Which radio equipment is not compulsory for the ships exclusively sailing in the sea area A 1? A.NAVTES receiver B. EPIRB C. HF DSC D.VHF DSC 3.Which radio equipment is not necessary for the ships sailing in the sea area A 2? A.MF DSC B.VHF radio telephone C. VHF DSC D.VHF EPIRB 4.The GMDSS must combine all various subsystems, because ______ ? A.they all have different limitations with respect to coverage B? they all have different limitations in the technology they use C.different systems apply to different ships D.all of above 5.The GMDSS is a world-wide communication network combining ____ with ______ ? A.satellite / terrestrial system B. INMAARSAT/COSPAS-SARSAT C.SART/EPIRB D. geostationary/polar-orbiting satellites 6.The GMDSS defines four sea area based on the ____ ? A.1 ocation and capacity of the facilities located on board ships? B.Position and type of a since section C? capacity and location of shore based communication facilities D.Position and capacity of mobile communication stations. 7.The general benefit of the GMDSS is to _____ . A.enable SAR operations to start with minimum delay B.give facilities to marine communication C? reduce sharply the chances of ship's sinking D. both A and C 8.Which of the following is a required GMDSS function? A.Reception weather map facsimile broadcasts B. Bridge to Bridge communications C.Reception os shore to shore distress alerts D? Transmitting shore to shore distress alerts
移动通讯专业术语中英文对照
移动通讯词汇（中英） 数字、英文 1/4比特数quarter bit number AGC恢复时间AGC recovery time AGC启动时间AGC attack time ATM技术asynchronous transfer technics, 异步转移模式，为多种速率信息的情况下研究的一种合适的传输与交换方式。 GSM 泛欧数字蜂窝移动通信系统GSM PLMN接入能力GSM PLMN access capability GSM PLMN连接类型属性 GSM PLMN connection type attribute GSM公共陆地移动网 GSM PLMN 用户身份模块：SIM J-K触发器J-K flip-flop M-序列M-sequence N进制数字信号n-ary digital system RS-232总线RS-232 bus A 安全地线 safe ground wire 安全特性 security feature 安装线 hook-up wire 按半周进行的多周期控制multicycle controlled by half-cycle 按键电话机p ush-button telephone set 按需分配多地址 demand assignment multiple access(DAMA) 按要求的电信业务demand telecommunication service 按组编码 encode by group B 八木天线Yagi antenna 白噪声white Gaussian noise 白噪声发生器white noise generator 半波偶极子halfwave dipole 半导体存储器 semiconductor memory 半导体集成电路semiconductor integrated circuit 半双工操作semi-duplex operation 半字节Nib 包络负反馈peak envelop negative feed-back 包络延时失真envelop delay distortion 薄膜thin film 薄膜混合集成电路thin film hybrid integrated circuit 保护比（射频） protection ratio (RF) 保护时段guard period 保密通信secure communication 报头header 报文分组packet 报文优先等级message priority 报讯alarm 备用工作方式spare mode 背景躁声background noise 倍频frequency multiplication 倍频程actave 倍频程滤波器octave filter 被呼地址修改通知 called address modified notification 被呼用户优先priority for called subscriber 本地PLMN local PLMN 本地交换机local exchange 本地移动用户身份local mobile station identity ( LMSI) 本地震荡器local oscillator 比功率(功率密度) specific power 比特bit 比特并行bit parallel 比特号码bit number (BN) 比特流bit stream 比特率bit rate 比特误码率bit error rate
通信工程专业英语词汇1
中国联通China Unicom 中国移动China Mobile 网络容量network capacity 交换容量exchange capacity 扩容Capacity Expansion 平滑升级smooth upgrade 射频Radio Frequencies 接收灵敏度Receive Sensitivity: 数据Data Options 传输速率Data Rate 电源部分Power supply 数据接口Data Interface 天线接口Antenna Interface 传输速率Baud Rate 用户交互界面User Interface 认证Certifications 网络数据传输数率net data transfer rate 联通无限U-Max 旗下subordinate] 品牌trademark U-Info 互动视界U-Magic 神奇宝典 U-Net 掌中宽带 U-Mail 彩e U-Map 定位之星 U-Sms 联通在信 应用服务Application Service 产业价值链industrial value chain 战略目标strategic objective 渠道channel 转型transition/Transformation 推广extension 针对aim at 电信telecommunication 整合conformity 市场渗透率market penetration factor 微观的microcosmic 科学技术science and technology 地理环境geographic environment 宏观的macroscopical 供应链supply chain 产品种类product variety
通信英语阅读练习
GMDSS英语阅读练习4 一、缩略语 1、ETA Estimate Time of Arrival预计抵达时间 Estimated Time of Arrival预计抵达时间 Estimating Time of Arrival预计抵达时间 Estimated Time of Arriving预计抵达时间 2、MF Medium Frequency 中频 Medium Frequency 高频 Medium Frequency 甚高频 Medium Frequency 射频 3、MMSI Maritime Mobile System Identification 海上移动系统识别 Maritime Mobile System Identity 海上移动系统识别 Maritime Mobile Service Identity 海上移动业务识别 Maritime Mobile Service Identification海上移动业务识别 4、NCC Network Coorperation Center网络协调中心 Network Coordination Center网络协作中心 Network Coorperation Center网络协调中心 Network Coordination Center网络协调中心 5、SSB Signal Side Band 单边带 Single Side Band 单边带 Signale Side Band 单边带 Single Slide Band 单边带 二、单选题 1、 Which of the following equipments on board is for the COSPAS-SARSAT system? A:DSC B:NAVTEX C:VHF D:EPIRB 2、Please choose the INMARSAT-C NCS ID of the W-AOR: A:044 B:001 C:211
半导体常用英语词汇
MFG 常用英文单字 Semiconductor半导体 导体、绝缘体和半导体主要依据导电系数的大小，决定了电子的移动速度。 导体：金、银、铜、铁、人、水……导电系数大，传导容易 绝缘体：塑料、木头、皮革、纸……导电系数小、传导不容易 半导体：硅中加锗、砷、镓、磷……平时不导电加特定电压后导电 Wafer 芯片或晶圆：原意为法国的松饼，饼干上有格子状的饰纹，与FAB内生产的芯片图形类似。 Lot 批；一批芯片中最多可以有25片，最少可以只有一片。 Wafer ID 每一片芯片有自己的芯片刻号，叫Wafer ID。 Lot ID 每一批芯片有自己的批号，叫Lot ID。 Part ID 各个独立的批号可以共享一个型号，叫Part ID。 WIP Work In Process，在制品。从芯片投入到芯片产品，FAB内各站积存了相当数量的芯片，统称为FAB内的WIP 。 一整个制程又可细分为数百个Stage和Step，每一个Stage所堆积的芯片， 称为Stage WIP。 Lot Priority 每一批产品在加工的过程中在WIP中被选择进机台的优先级。 Super Hot Run的优先级为1，视为等级最高，必要时，当Lot在 上一站加工时，本站便要空着机台等待Super Hot Run。 Hot Run的优先级为2，紧急程度比Super Hot Run次一级。 Normal的优先级为3，视为正常的等级，按正常的派货原则，或 视常班向生产指令而定。 Cycle time 生产周期，FAB Cycle Time 定义为：从芯片投入到芯片产生的这一段时间。 Stage Cycle Time：Lot从进站等候开始到当站加工后出货时间点截止。 Spec. 规格Specification的缩写。产品在机台加工过程中，每一站均设定规格。 机台加工后，产品或控片经由量测机台量测，该产品加工后，是否在规格 内。若超出规格﹝Out of SPEC﹞，必须通知组长将产品Hold，并同时通知 制程工程师前来处理，必要时机台要停工，重新monitor，确定量测规格， 藉以提升制程能力。 SPC Statistics Process Control统计制程管制；透过统计的手法，搜集分析资料，
通信常见英语词汇完整版
WLAN--WirelessLocalAreaNetwork, 中文名叫:无线局域网 WiFi--Wireless Fidel ity ，是一种无线联网的技术（俗称：无线宽 带） DT--Drive Test ，路测，是无线网络优化数据采集的方法。 CQT--Call Quality Test ，呼叫质量测试或定点网络质量测 试 GPS--Global PositioningSystem （全球定位系统）的简 称 KPI--KeyPerformanceindicator 关键性能指标 SIM 卡--Subscriber Identifica tion Module 用户身份鉴别模件 FTTH--Fiber To The Home 光纤到户 Channel--海峡, 频道, 通道，通信中指信息传输的通道（信 道） Frequency-- 频率，通信中特指无线信号的频率 Mobile station -- 移动的设备，移动台，特指手机 Basestation--基站，用于接收和发送手机信号 Short message-- 短消息，短信 Communication-- 通 信 Network-- 网络 Mobile community-- 移动通信 4G--G 是generation （一代）的简称，特指第四代移动通信技 术 Protocol-- 协议，网络之间互联遵循的 规范 Online -- 在线的，名词可指网游 Online banking -- 网上银行 Wireless-- 无线，通信领域范畴指的是无线电或无线电波 Broadcast-- 广播 Cell--细胞；电池；蜂房的巢室；单人小室。移动通信网络中特指小区（基站信号覆盖的范围） Satell ite Communication-- 卫星通信 China Mobile-- 中国移动 China Telecom-- 中国电信 China Unicom-- 中国联通 Opted fiber--光纤 Cable-- 电缆 Management-- 管 理 DC--direct curren t ，直流电 AC--alternating current ，交流电 DT--Drive Tes t ，无线网络路测
【优质】航海英语阅读翻译+答案
Passage 3-01 Labour should be ordered by 0900 hrs for 2nd shift (1500 to 2300 hrs) on same day and by 1300 hrs for 1st shift (0700 to 1500 hrs) for next day. By1100 hrs, for 3rd shift (2300 to 0500 hrs) in same day. Under normal circumstances, no work is performed during meal hours 1100 to 1200 hrs and 1830 to 1930 hrs. unless the ship is classified as a key vessel or the agent orders work during the meal hours. 劳工应责令0900小时第二轮班同一天（1500至2300年时）小时和1300第一班的第二天（0700至1500小时）小时。 By1100小时，第三转变同一天（2300至0500小时）。 在正常情况下，没有工作是执行在用膳时间1100至1200年和1830年至1930年小时小时。除非该船舶被列为重点船舶或者其代理人的订单时，才会在用餐时间的工作。 C 001. If you want to order labour in this port for the third shift in same day, the order should be made by ________ .如果你想在这个港同日第三班劳动，顺序应该是在… A. any time任意时间 B. 0900 hours C. 1100 hours D. 1300 hours B 002.________is performed during meal hours under usual circumstances. 正常情况下，…会被安排在用餐时间工作 A. Cargo work货物装卸 B. No cargo work不进行货物装卸 C. Ordering work by Agent代理所下的订单工作 D. loading and discharging 装卸 A 003. Loading and discharging can be performed during meal hours _____ A. if the ship is classified as a key vessel 该船为重要船只 B. if agent orders work beforehand 代理预先有所要求 C. under normal circumstances 在正常情况下 D. either A or B A或者B C 004. What does the word “key” mean ________? A. laden满载的 B. small小的 C. pivotal重要的 D. big大的 Passage 3-02 Before arrival in the United Kingdom, the master will have informed his owners or agents of the approximate time of the vessel's arrival at the pilot station for the port of destination. The vessel should be flying her ensign and also her signal letters and the requisite pilot signal when approaching the pilot station. The international signals, as well as any local port signals, can be found in the Sailing Directions, which is also known as the "Pilot Book" When a pilot is required most ports now require due notice of the vessel's ETA to be sent in by radio. However, this does not relieve the ship's obligation to display the pilot signal ("G" by any of the methods of signaling ) until the pilot is aboard when "H" flag will be flown. If the master or first mate of the vessel has a pilotage certificate for the district then the above is unnecessary, in such case the pilot flag (white and red horizontal halves, as on the pilot vessel) will be flown. 在到达英国之前，船长会在引航站通知他的业主或代理到达目的港的大致时间。船舶应该在靠近引航站时升起船旗和她的信号字以及必要的控制信号。国际信号，以及本地港口的任何信号，都可以在航路指南也叫做水路指南的书中找到。大多数港口现在需要引航员通过无线电适时通知其船只的预计到达时间。但是，只有当引航员在甲板上升起H旗才算是免除船舶显示控制信号的义务（“G“的通过对信号的方法之一）。如果该船只的船长或大副有一个该区的引航证，则不需要进行上述行为。在这种情况下，将需升起引航旗。 B 005. While the pilot is on ship, ________should be displayed on the top of the ship mast. 当引航员在船上，…需要展示在船桅顶端 (1) "G" flag G旗(2) "H" flag H旗 A. only (1) 只有（1） B. only (2) 只有（2） C. both (1) and (2) （1）以及（2） D. (1) plus (2) （1）加上（2） A 006. What's the meaning of the "ETA"________ ETA的意思是…. A. Estimated time of Arrival 预计到达时间
通信常见英语词汇完整版
1. WLAN--Wireless Local Area Network, 中文名叫: 无线局域网 2. WiFi--Wireless Fidelity ，是一种无线联网的技术（俗称：无线宽 带） 3. DT--Drive Test ，路测，是无线网络优化数据采集的方法。 4. CQT--Call Quality Test ，呼叫质量测试或定点网络质量测试 5. GPS--Global Positioning System （全球定位系统）的简称 6. KPI--Key Performance indicator 关键性能指标 7. SIM 卡--Subscriber Identification Module 用户身份鉴别模 件 8. FTTH--Fiber To The Home 光纤到户 9. Channel-- 海峡, 频道, 通道，通信中指信息传输的通道（信道） 10. Frequency-- 频率，通信中特指无线信号的频率 11. Mobile station-- 移动的设备，移动台，特指手机 12. Base station-- 基站，用于接收和发送手机信号 13. Short message-- 短消息，短信 14. Communication-- 通信 15. Network-- 网络 16. Mobile community-- 移动通信 17. 4G--G 是generation （一代）的简称，特指第四代移动通信技术
18. Protocol-- 协议，网络之间互联遵循的规范
Online--在线的，名词可指网游 On li ne bankin g--网上银行 Wireless--无线，通信领域范畴指的是无线电或无线电波 Broadcast--广播 Cell--细胞；电池；蜂房的巢室；单人小室。移动通信网络中 特指小区（基站信号覆盖的范围） Satellite Com mun icatio n-- 卫星通信 Ch ina Mobile--中国移动 China Telecom--中国电信 China Unicom--中国联通 Opted fiber-- 光纤 Cable--电缆 Man ageme nt--管理 DC--direct curre nt ，直流电 AC--alternati ng curre nt ，交流电 DT--Drive Test ，无线网络路测 CQT--Call Quality Test ，呼叫质量测试（通信里常称为拨打 测试） 19. 20. 21. 22. 23. 24. 25. 26. 27. 28. 29. 30. 31. 32. 33. 34. 35. 36. 37. 38.
GMDSS英语阅读附加题
GMDSS英语阅读附加题 1.Which transmissions are pe? on the fre? 3174.5KHz in NBDP service? A.Distress and safety traffic using narrow-band direct-printing telagraph exclusively B.Transmissions of information regarding the safety of navigation and weather warnings C.Distress and safety traffic in radiotelephony D.Transmissions of the international NA VTEX system 选A 2.For COSPAS-SARSAT system,______usually transmit initial COSPAS-SARSAT alert A.RCC B.MCC C.LUT D.MRCC
选C 3.Ships equipped with Inrnarsat SES send distress aierts both______ A.quick and good B.convenient and certain C.easily and simply D.important and difficult 选B 4.NA V AREA warnings generally concern information______ A.in coastal waters B.in offshore waters C.within the limits of a harbour D.which the ocean-going ship does not tequire 选B 5.A ship station on receiving a shore-to-ship distress aiert should____
GMDSS英语阅读试题1-100
GMDSS英语阅读试题1-1002009年05月21日星期四19:05 GMDSS英语阅读500题单选题一 第三部份英语阅读 单项选择题 1. IMO has decided that all ships over 300TGt must be fitted with a NA VTEX receiver ______ . A. by 01 Feb 1992 B. by 01 Aug 1993 C. between 01 Feb 1992 and 01 Feb 1999 D. before 01 Feb 1992 2. GMDSS is to provide ______ with reliable communication . A. all large passenger vessels B. freighters of more than 300gt in coastal waters C. all passenger ships and cargo ships engaged in international-voyages D. all passenger ships and cargo ships of 300gt upwards in open sea 3. The complying vessels can transmit ship-to-shore distress alerts by at least ______ . A. One means, whether satellite or terrestrial techniques B. Two means, whether satellite or terrestrial techniques C. Two separate and independent means, each using different radio communication services D. Two means, such as MF DSC and HF DSC 4. The quality of the message can be affected by ______ . A. climate B. sunshine C. human beings D. both a and b 5. Within the polar areas it is ______ to see a satellite in geo-stationary orbit . A. impossible B. possible C. easy D. difficult 6. The Inmarsat system is open for use by ______ countries on a non-discriminatory basis . A. some B. lots of C. many D. all 7. With the help of GMDSS ______ can be alerted to a distress incident as soon as possible . A. all ships in a large sea area B. only the sea authorities ashore C. the SAR units ashore and at sea D. the port radios and the coast stations 8. In areas covered by Inmarsat HF can be used as an ______ to satellite communications. A. alternation B. alternate C. alter D. alternative 9. When receiving a distress alert, the SAR authorities ashore and the ships in the vicinity of the ship in distress will ______ in a coordinated search and rescue operation with the minimum delay . A. assist B. send a rescue vessel C. search the distress area D. reach the distress position at once 10. In which year was the COSPAS-SARSAT system established ? A. 1980 B. 1981 C. 1979 D. 1982 11. It is quite ______ for an SES operator to send a distress alert . A. easy and expensive B. simple and certain C. dangerous and stable D. difficult and compulsory 12. Any ships fitted with SES can ______ and _______ through the satellite system
电子通信专业英语词汇
A a bit 一个比特a coil of 一圈 a mix of comflicting information 一个混合的相互冲突的信号 a parallel or series circuit 并联成串联回路 abbreviate 缩写abruptly 突然地absolutely summable 完全可求和 absolute绝对 AC 交流accomplish 实现 accumulate 聚集accurately 精确的 acoustic声学acronym 缩写across the open connection point 开路电压actirated simultaneously 同时被激励activation 激励 activation 激活active devices有源器件 active 有源additional term附加项 adequate 适当地adjacent 相邻的adjustable可调的aeronautics 太空学aeronautics and astronautics 航空航天 aircraft飞行器 alarm 警报器 algebra 代数 algorithm 算法 all or nothing 宁为玉碎，不 为瓦全 allow the solution 求解 alter 转换 alternate current 交流 alternatively 或 者 altitude 海拔 amount 量 ampere 安培 amplification factor 放大系数 amplify放大 amplitude 振幅 an electric combination lock 电子号码锁 an exact relation 直接关系 an initial time 初始 analog ics 模 拟集成电路 analog 模拟 analogous fashion 类似的方式中 analogous 相似的 analog类似的 analytic and numerical solution 解析法和数值法求 解过程 anatomical 解 剖，人体解剖学 angle 角度 anisotropic 各 向异性的 annual 年 antenna天线 apparatus仪器 appliance 工具，设 备，装置，仪表 appointed任命 apprenticed学徒 approach进场 appropriate 适合 approuch 接近地面 approximate近似 arbitrary 任意 are also governed 符合 arise 出现，产 生 arithmetic operations 算 法操作 arithmetic 算术 armed force 军 事力量 artery动脉 artificially 人为 地 assemble 组合 associated with 伴随着 Associative Law 结合律 associative 结合 (率) assume假设 astatic needle 无定向磁针 astatic不定向的 astronautics 太 空航空学 astronomically 天 文学的 astronomy天文学 atmospheric 大气 atom 原子 atomic原子 attenuation衰减 audio音频 automotive vehicle 汽车 available to motivate 可用于驱 动 axial轴 B bachelor 学士 back-of-the-envel ope type analysis 黑箱类型的封 装中 back-of-the-envel ope 粗略 bandwidth带宽 bar 横杠 base 基极 basic operatiom 操作 battery 电池 be analogous to 与…相似 be appropriate for 适合 be conservative 保留 be converted into 转换成 be demited as命名 的为 be evaluated被赋 值/被评估 be expanded被扩展 be factored into 被给予系数 be indicated表示 be isotropic各个 同性的 be present in存在 be reduced to归纳 be referred to in terms of flow 被 比喻做流动的形态 be released 放 开 be subject to易遭 受… be supplemented by 被增加 be symbolically denoted with 用…符号表示 beam（光）束 behavior 性能 beta β bias 偏见 binary digit 二 进制数字 binary 二进制 biological 生物学 biomedical engineering生物医 学工程 bipolar transistor 双极管 bipolar 双极型 blacksmith铁匠 block 阻塞 Boltzman波尔兹曼 bookbinder 装 订商 Boolean algebra 布尔代数 Boolean 布尔 bound 跳跃 boundary condition 边界条件 bounded 有界的 bounding surface 边界局面 brackets 方括号 brightness亮度 broadcast广播 building block结 构单元 but rather to 而是 buzzer 蜂鸣器 by a vector 以 矢量方式
通信专业常用英语词汇
2G 2nd Generation Mobile Communications System 第二代移动通信系统3G/3GMS 3rd Generation Mobile Communications System 第三代移动通信系统3GPP 3rd Generation Partnership Project 第三代合作组织 AAA Authentication, Authorization, Accounting 鉴权、授权、计费 AAL1 ATM Adaptation Layer type 1 ATM适配层类型1 AAL2 ATM Adaptation Layer type 2 ATM适配层类型2 AAL5 ATM Adaptation Layer type 5 ATM适配层类型5 ABR Available Bit Rate 可用比特率 ACL Access Control List 访问控制列表 ACS Add, Compare, Select 加,比,选 ADMF Administration Function at the LIAN LIAN中的管理功能实体 ADT Adaptive Dynamic Threshold 自适应动态阀值 AG Access Gateway 接入网关 AI Acquisition Indicatior 捕获指示 AICH Acquisition Indication Channel 捕获指示信道 ALIM ATM Line Interface Module subrack ATM线路接口插框 AM Account Management 计费管理 AM Acknowledged Mode 确认模式 AMR Adaptive MultiRate 自适应多速率 ANSI American National Standard Institute 美国国家标准组织 AoCC Advice of Charge Charging 计费费用通知 AoCI Advice of Charge Information 计费信息通知
通信专业术语及缩写词
Abbreviation: PAGA-Public address general alarm ; PAS-Public address speaklouder; PAT-Public address telephone station; PAB-Public address Beacon; PAC-Public address control unit; MDF-Distributing Frame; ODF-Optic Fiber Distributing Frame; CCTV-CCTV; CAM-Camera; CAME-Camera Ex proof; IDR-Intrusion detector receiver; IDS-Intrusion detector system; IDT-Intrusion detector transmitter; PBX-Private branch exchange; LAN-Local area network; VSAT-Very small aperture terminal; EMSV-Emergency Mobile Satellite Vehicle RFTS-Remote Fiber Test System IAS-Integration Alarm System HSWR-High-power Short-wave Radio System PCS-Patrolling Control System NVS: Network Video Server DVR: Digital Video Recorder PSTN: Public Switched Telephone Network IAD: Integrated Access Device ODU: Outdoor Unit IDU: Indoor Unit PBX: Private Automatic Branch Exchange MCU: Multi-point Control Unit VTE: Virtual Terminal Environment VSAT: Very Small Aperture Terminal VCS: Video Conference System LNB: Low noise block SMC: Network Management Server for VCS DCC: Data Communication Channels BNC: Bayonet Nut Connector CCTV Closed Circuit Television Systems