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GMDSS--通信英语

GMDSS 通信英语

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 NAVTEX 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

easy D. difficult

6. The Inmarsat system is open for use by ______ countries on a non-discriminatory basis .

A. some

B. lots of

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

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 when sending a distress alert .

A. enter the system / contact an RCC

B. access to INMARSAT / establish contact with a CES

C. have absolute priority to enter the system / make contact with a CES

D. enter the system gradually / wait for rescue

13. What’s the advantage when using the satellites ?

A. The message can be directed to the desired location

B. The message can follow the earth’s curvature

C. The quality of message can not be affected by climatic

D. The range of the message extend and the quality of reception is improved

14. The DSC frequency for distress alerting in Area A2 is ______ .

A. 2182KHZ

B. 2174.5KHZ

2192KHZ D. 2187.5KHZ

15. What channel is general communication used ?

A. any appropriate channel except public communication

B. any appropriate channel except for public communications

C. any appropriate channel besides public communication

D. any appropriate channel beside public communication

16. why do some stations keep silence ?

A. Because they are not engaged in the distress traffic

B. they will affect the transmission of the distress traffic

C. The powers of these stations are very weak

D. They are not in charge of search and rescue

17. General radio communications in the global system are those between ______ concerning the management and operation of the ships and may have impact on their safety .

A. SAR party and the ship in distress

B. SAR authorities and the ship in distress and survival craft

C. A ship station and any coast station

D. Ship stations and shore-based communication network

18. It is required that ships proceeding at sea should keep continuous watch on ______ .

A. VHF channels 16 and 13

B. Appropriate DSC distress and safety frequencies

C. INMARSAT TDM message channel

D. VHF channel 70 and channel 8

19. The ARQ mode should be applied ______ .

A. when two stations communicate with each other

B. in any radio system and at any time

C. when one ship sends a message to another station

D. for communication among some stations

20. What information will a distress alert contain ?

A. nature of distress

B. type of assistance required

C. course and speed and time at which the information was

recorded

D. A, B, C are all right

21. A radio determination system based on the comparison of reference signals with radio signals reflected , or retransmitted from the position to be determined, is ______ .

A. DF

B. Radar System

C. DSC

System D. COSPAS-SARSAT

22. With the help of modern technology, ships are able to receive automated broadcast of safety messages ______.

A. by day or at night

B. almost round the clock

C. somewhat and sometime

D. from sunrise and sunset

23. The WWNWS is a coordinated global service for the broadcast by radio of vital information on ______ to marine navigation.

A. ship’s movement

B. safety

C. ship’s management

D. hazards

24. distress alerts will be relayed on the ______ when the RCC considers it necessary .

A. dedicated system

B. MSI broadcasts

518KHZ D. channel 16

25. The frequency 518KHZ will be used to transmit ______ and ______ wanings in NAVTEX .

A. navigational / typhoon

B. traffic / meteorological

C. marine / hurricane

D. navigational / meteorological

26. It is possible for ships to receive safety message transmitted by Navtex station ______ .

A. in any INMARSAT regions

B. in each

NAVTEX area

C. at any distance

D. in Areas A3 and A4

27. A Navtex station in each NAVAREA is usually allowed to have ______ for transmission .

A. 10 minutes every 4 hours

B. half an hour every other hour

C. irregular period of time

D. 5 minutes every two hours

28. The difference between international and national Navtex Service is limited to ______ .

A. frequency allocated

B. both language and frequency

C. language used

D. transmission power and time

29. Navtex transmitter identification character ______ is used to identify the broadcasts which are to be accepted by the receiver and those are to be rejected .

A. B2

B. B1

C. MAR

D. NNN

30. The receiving stations can use the B2 character to ______ different, classes of messages .

A. identify

B. Correct

Reject D. Print out

31. If EGC receiver shares a same antenna with Inmarsat SES, it means that it can receive MSI ______ .

A. from any Inmarsat satellite

B. from any appropriate Navtex and EGC station

C. via the satellite the SES is tracking

D. from any RCC and coast station

32. Why should the SES operators be very careful when the ship enters the area where three ocean regions overlap ? Because ______ .

A. the weather is always terrible

B. the condition there is complicated

C. the signals are too strong

D. their SES may receive the signals from unwanted satellite

33. The establishment of INMARSAT as an independent organization marked

a great step forward for maritime radio communications . What does “marked a great step” mean in the sentence ?

A. To run faster than ever

B. To go

forward C. To march without stopping

D. A significant symbol of a great improvement in maritime communication .

34. In addition to meeting the requirement of Sea area A1, every ship engaged on voyage in Sea area A2 shall be provided with ______ .

A. MF radio installation with DSC

SES

C. MF/HF radio telephone installation

D. 2187.5KHZ watch receiver

35. ______ is a space system using one or more artificial earth satellites .

A. satellite network

B. Satellite Link

C. INMARSAT

D. Satellite System

36. The satellites over the major ocean regions cover the globe ______ . 二

A. besides the polar regions

B. including the North Pole and the South Pole

C. above 70N and below 70S

D. as far north and south

37. There are some back-up satellites in the event of failure. If the operational satellite is out of work, ______ .

A. communications in the whole system will stop

B. the global system will be damaged

C. the back-up one will take its

place D. the whole system will not work 38. The position if the IOR satellite in the INMARSAT system is ______ above the equator .

A. 64.5E

B. 178E

15.5W D. 54W

39. The GMDSS defines four sea area based on the ______ .

A. location and capacity of the facilities located on board ships

B. Position and type of a sincere sintion

C. Capacity and location of shore based communication facilities

D. Position and capacity of mobile communication stations.

40. The NCS of INMARSAT-A system in the IOR is in ______ .

A. Goonhilly, UK

B. Yamaguchi, Japan

C. Perth, Australia

D. Southbury, USA

41. The Network Coordination station for the INMARSAT-A coast stations in the Pacific ocean region is in ______ .

A. Yamaguchi, Japan

B. Beijing, China

C. Nakhodka, Russia

D. Perth, Australia

42. Any ship with SES can ______ and ______ through the Inmarsat satellites when sending a distress alert .

A. enter the system rapidly / wait for rescue

B. have an absolute priority to enter the system / contact with a

CES

C. establish contact with the RCC / enter the port

D. enter the system gradually / get the rescue

43. A mobile earth station in the maritime mobile-satellite service, which is located on board ship, is called ______ .

A. an LES

B. an SES

C. a ship

station D. a Land Mobile Station

44. After successful commissioning , the ______ will permit the SES access to system.

A. INMARSAT

B. IMO

MSC D. CES

45. In general, there are two parts in an SES, One of these is antenna eqipment also referred to as ______ .

A. BDE

B. UDE

AEP D. ADE

46. To establish a communication channel for the telex service in the INMARSAT-A terminal, you should first ______ .

A. establish a communication channel from the CES, via the International Telex Network to the final destination

B. set up a communication channel from your SES, via a satellite, to a CES within your ocean region

C. set up a channel directly to the addressee at the destination

D. establish a channel from your terminal , via the International Telex Network to a CES within your ocean region

47. The maritime access code for the AOR-E is ______ in INMARSAT-A Telex Service .

A. 581

B. 582

583 D. 584

48. When you have received GA+ from the CES for the INMARSAT-A telex communication, you should immediately select ______ and ______ you required .

A. an CES / telex mode

B. an SES telex service

C. the service /the subscriber

D. a satellite /an ocean region

49. Every ship must be fitted with SART, and two-way VHF radio telephone .

A. 1, 2

B. 2, 3

C. 2, 1

D. 3, 2

50. The maritime access code of telephone mode in INMARSAT-A terminal for the IOR is _____.

A. 871

B.872

C.873

D. 874

51. ______ are operated as a secondary method of alerting in the GMDSS .

A. satellite EPIRBs

B. Non-satellite

EPIRBs C. SES and DSC D. a+b

52. Which Inmarsat system applies store-and-forward messaging ?