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2011年广东工业大学考博试题 2002线性代数

2011年广东工业大学考博试题 2002线性代数
2011年广东工业大学考博试题 2002线性代数

中南大学2010级博士生英语考试试卷

English Test Paper for Doctoral Candidates (A) 2011.01.09 Part I Listening Comprehension (15%) Section A Directions:In this section, you will hear several short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the center (on Answer Sheet I). 1. A. She is in Vietnam. B. She is in Thailand. C. She is right here. D. She is in Tokyo. 2. A. By taxi. B. By bus. C. On foot. D. By train. 3. A. He stays late for the lesson. B. He is studying. C. He has little rest. D. He is resting. 4. A. She gave a lecture to the psychology class. B. She advised the woman to see a psychologist. C. She persuaded the woman not to take the course. D. She convinced the woman to apply to graduate school. 5. A. She read it selectively. B. She went over it chapter by chapter. C. She read it slowly. D. She finished it at a stretch. Section B Directions:In this section, you will hear several short passages. At the end of each passage, you will hear some questions. Both the passage and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A, B, C and D. Then mark the corresponding letter on the Answer Sheet with a single line through the center (on Answer Sheet I). Passage One 6. A. How to choose the qualified goods. B. The consumer's rights. C. The importance of the quality. D. How to demand the replacement.

广东工业大学考试试卷线性代数

广东工业大学考试试卷 ( A ) 考试时间: 2007 年 6月18日 (第 16周 星期 一) 一、 填空题(每小题4分,共20分) 1. 若三阶矩阵A 的行列式 |A| = a, 则 |3A| = __________, 2.若a 522315 21-=0, 则a =______. 3.已知四阶行列式D 的第三列元素依次为-1,2,0,1, 它们的余子式分别为5,3,-7,4,则 D = _______. 4. 线性方程组?????=+-=-+=-+2 201 32132132 1x x x x kx x x x kx 有唯一解时,k 应满足 _______ 。 5. 设321,,ααα是线性无关向量组,则向量组 3233123211,,32ααβααβαααβ+=+=++= 线性关系是 ____________ . 二、选择题(每小题5分, 共 20分) 1.0111 1≠--k k 的充要条件是( ) (A )0≠k (B )2≠k (C )0≠k 且2≠k (D )0≠k 或2≠k 2.设A ,B 都是n 阶方阵,则下列等式中成立的有( ) (A)|A+B|=|A|+|B| (B)AB=BA (C)|AB|=|BA| (D)(A+B)-1=A -1+B -1 3.当非齐次线性方程组b X A n n m =??1满足条件( )时,此方程组有解 (A )n b A R ≥),( (B) )(),(A R b A R = (C) n b A R ≤),( (D) )(),(A R b A R ≥ 4. 线性方程组???=++-+=-+-+0 x x 2x 2x 2x 20 x 2x x x x 5432154321的基础解系中所含向量的个数为( ) (A) 1 (B) 2 (C) 3 ( D) 4 三、 计算题 (共60分) 1. (10分)计算行列式D 的值: D = y y x x -+-+111111111 1111 111

2015中南大学考博英语经典阅读:An educationin finance

2015中南大学考博英语经典阅读:An educationin finance 国庆长假,育明考博考博小编为同学们收集整理了经典阅读资料并附有例句解析,希望育明考博考博伴随同学们共度国庆,复习的更加顺利!联系我们扣扣:四九三三七一六二六。电话:四零零六六八六九七八 An educationin finance Less well known is the increasing willingness of colleges to borrowin the markets,too.On May15th,for example,Cornell University sold$250m-worth of bonds.In recent weeks both Harvard and the University of Texashave also raised hundreds of millions of dollars in this way. Such debt-raising is becoming more common.There are abundantreasons to believe that the market will grow much bigger yet. Largely this is because colleges are only belatedly becoming awareof how useful the financial markets can be.No doubt some of their hesitationhas been cultural:academics may have been reluctant to look at theiruniversities as businesses;or they may have misunderstood what was needed tohelp those businesses grow. If they did look at their institutions in economic terms,people ineducation tended not to think that universities lacked capital.Rather,theythought that they had a structural inability to use capital and labour moreefficiently.Unlike the car industry,many schools felt that they mustmaintain,or even increase,the ratio of employees(teachers)to customers(students).Small class sizes are taken as a signal of high quality,soinvesting money to save on teachers’salaries is not anattractive strategy. Schools had other reservations as well.Poor schools were worriedabout being unable to service debt.Rich schools with huge endowments may haveseen no need. So much for an academic perspective.A growing number of investorssaw

广东工业大学 精读英语 B 卷

广东工业大学2013年度上学期英语考试(B)卷 Ⅰ.Vocabulary and Structure ( 20 x 1 = 20 ) Directions: In this section , there are 26 incomplete sentences. For each sentence there are four choices marked A,B,C and D. Choose one answer that best completes the sentence and blacken the corresponding letter. 1. I have never read such a ______ book! A. bored B. bore C. boring D. born 2. He was famous both at home and ______. A. board B. aboard C. broad D. abroad 3. Grandpa once ______ a family of ten on seven dollars a week. A. raised B. arose C. rose D. risen 4. I _____ smoke, but now I have given up. A. was used to B. got used to C. used to D. am used to 5. He had been sent to England at the age of eight to ________ a school in London. A. tend B. attend C. trend D. intend 6. I really ______ the weekend because that’s when we can spend some time together. A. look out for B. look forward to C. look down to D. look around for 7. We do the same job although I am senior ______ him.

三、2009-6-15线性代数A卷

广东工业大学试卷用纸,共3页,第1页

广东工业大学试卷用纸,共3页,第2页 2、设行列式 1 53478031 1113152???= =A D ,则2=+?+4443424135A A A A . (A )0(B )1(C )-1(D )-16 3、设A 、B 是n 阶方阵,下列等式正确的是. (A )AB=BA (B )))((22B A B A B A ?+=?(C )2 2A A =(D )1 11)(???+=+B A B A 4、设0α是非齐次方程组b AX =的一个解,r ααα,,,21?是0=AX 的基础解系,则 . (A)01,,,r ααα?线性相关。(B )01,,,r ααα?线性无关。 (C )01,,,r ααα?的线性组合是b AX =的解。(D )01,,,r ααα?的线性组合是0=AX 的解。5、n 阶方阵A 与对角阵相似的充要条件是 . (A)A 是实对称阵;(B)A 有n 个互异特征值;(C)A 的特征向量两两正交. (D)A 有n 个线性无关的特征向量; 三、(10分)设n a a a A +++= 111 1 11 1 11||21 ???????,021≠n a a a ?其中.求A . 四、(10分)设4阶方阵C B A ,,满足方程11)2(??=?C A B C E T ,试求矩阵A ,其中 1 2321 2 010*******,001200120001000 1B C ?????? ?????? ???==??????????????? ? 五、(10分)讨论λ为何值时,方程组??? ??=+++=+++=+++λλλλ3 21321321)1(3 )1(0)1(x x x x x x x x x

广东工业大学 精读英语 A 卷

广东工业大学2013年度英语考试(A)卷 Ⅰ.Vocabulary and Structure ( 20 x 1 = 20 ) Directions: In this section , there are 26 incomplete sentences. For each sentence there are four choices marked A,B,C and D. Choose one answer that best completes the sentence and blacken the corresponding letter. 1.It is really impossible for us to arrange the meeting ________ such short notice. A.on B. in C. with D. by 2. It was the kind of morning when you wake up and feel really ________. A. live B. living C. alive D. lively 3. Japan will increase its auto exports to the United States ________ 25%. A. with B.in C. at D. by 4. I’m fed up with waiting. I won’t wait ________. A. no longer B. some longer C. more longer D. any longer 5. We need to _______ how we’re going to get there. A. work on B. work out C. work over D. work at 6. _________ people watched the 1884 Summer Olympics. A. Millions of B. Millions C. A million of D. Million of 7. Her unhappy face ______ with me throughout the rest of my

广东工业大学研究生英语期末考试历年试卷及答案

English Final for Postgraduates (A) 2 Hours Part I Vocabulary (25%) Choose the best answer from the four choices given.

26. Whatever your argument, I shall A)hold back B)hold on C)hold to D)hold up 27. The constancy of human nature is , as no one believes that a man can fundamentally change his nature. A)proven B)proverbial C)provisional D)provocative 28. Even during the preteen years, romantic experiences are cultured in the sense that societal and group practices and expectations ________ romantic experience. A) shape B) polish C) resist D) stir 29. Married partners may love each other even though they rarely, or never,_______ physical intimacy. A) engage with B) engage in C) engine with D) engine in 30. Beginning in childhood, parents encourage or limit future romantic _______by selecting certain neighborhoods and schools. A) dimensions B) connections C) liaisons D) affiliations

中南大学2008级博士生英语考试试卷

English Test for Doctoral Candidates (A卷) Dec. 28, 2008 Part I Listening Comprehension (20%) Section A Directions:In this section, you will hear 10 short conversations. At the end of each conversation, a question will be asked about what was said. Both the conversation and question will be spoken only once. After each question, there will be a pause. During the pause, you must read the four choices marked A, B, C and D, and decide which is the best answer. Then mark the corresponding letter on your Answer Sheet I with a single line through the center. 1. A. Touch all his friends. B. Write a lot. C. Have a lot of time. D. Have a lot of friends. 2. A. To work for a small company. B. To start a large company. C. To be independent. D. To graduate. 3. A. Buy a new car. B. Go to a new store. C. Find a new repair shop. D. Take a different bus. 4. A. 36 dollars. B. 15 dollars. C. 12 dollars. D. 4 dollars. 5. A. One hour. B. Two hours. C. Three hours. D. Four hours. 6. A. Perston's sister is going abroad. B. The man is probably reading a newspaper. C. The news today is very unusual. D. The Prime Minister is warmly welcomed. 7. A. She likes Mexican food. B. She expected a better dinner. C. The dinner was expensive. D. She enjoyed the food more than the man did. 8. A. 6 hours. B. 1 hour. C. 10 hours.

中南大学2015考博英语:高分经验阶梯复习方法分享

中南大学2015考博英语:高分经验阶梯复习方法分享考博是一个系统的学习、复习提高的过程。在这个漫长的复习过程中,你应该制定一个科学可行的复习方案,按部就班的踏实完成,才有可能将复习坚持到底,并达到卓有成效的目的。关于考博英语的复习,一千个人就有一千个方法,只要肯做方法便无穷。我认为英语是个积累性很强的学科,如果想要在有限的时间里提高英语成绩,前提就是要分阶段、分梯度,循序渐进的进行复习。当然,这个过程中,也应该根据自己的复习情况,对计划有针对性的调整。下面育明考博考博的小编就给大家分享下考博英语阶梯复习方法。联系我们扣扣:四九三三七一六二六。电话:四零零六六八六九七八 一、第一阶段:从基础入手 这个复习阶段在我的全程复习中,大约占到了3个月的时间。主攻的方向为单词和长难句。单词是提高英语的基础;而长难句考查的主要是语法知识,它是考博英语和其他各类英语考试最大区别。 词汇量是考博英语阅读能力和写作能力提高的根本。词汇复习需要你制定一个详尽复习计划,忌好高骛远,要注重循序渐进的反复及“消化”过程。对于重点词汇及同义词、反义词、派生词等区别、用法,要侧重记忆。 育明考博考博英语辅导老师根据多年的教学经验,为大家这部分的复习提出以下的建议: 1)词汇复习书籍的选择。建议你应该依据个人学习习惯和记忆模式去挑选资料。例如,如果你习惯快速记背,遗忘规律遵循的时间较短,建议你选择全都是词汇的小册子作为第一轮单词复习的首选。但是,无论你的记忆模式是怎样的,一定要认真的背完一遍。 2)找一本比较权威全面的语法书。这样的资料容易帮助你重温各种语法的基本结构。阅读和翻译中的长难句,是由各种简单结构组合而成的,所以

专业英语考试试卷(广东工业大学)

广东工业大学研究生试卷用纸,共6页,第1页

2.Passive air sampler(PAS),a simple power-free device based on the theory of physical advection and diffusion,has been used for various monitoring research projects from regional to global scales to investigate the environmental levels and distributions of POPs, for which an active high volume air sampler is impractical for sampling at a high spatial resolution.Though PASs have been used to achieve spatially resolved data for almost a decade,they still have some shortcomings,such as the complex and limited sampling rate calculation.To use the PAS quantitatively to assess ambient air concentrations,it is necessary to know the sampling rate for the specific compounds. 被动空气采样器(PAS),基于物理平流和扩散理论的简单无动力装置,已被用于各种从区域到全球尺度调查持久性有机污染物的环境水平和分布的监控研究项目,因为在高空间分辨率下使用活跃高容量空气采样器采样是不切实际的。虽然被动空气采样器被用来获得了近十年的空间分辨的数据,但是他们仍然有一些缺点,例如采样率计算的复杂性和有限性。要使用被动空气采样器来定量评估环境空气中的浓度,有必要知道具体化合物的采样率。 3.The present study established an improved correction method for using a PAS to assess the distribution of PCNs in the eastern Pearl River Delta(PRD),South China.As a tributary of the Pearl River,the Dongjiang River(or East River),which is located in the eastern part of the PRD,supplies fresh water to many cities,including Guangzhou, Dongguan,Shenzhen,and Hong Kong.The highly intensive industries in this region are associated with the emission of various chemicals that may pose a potential pollution to the river and the ecosystem. 本研究建立了一种改进的校正方法,利用被动空气采样器评估在中国南方珠江三角洲东部的聚氯化萘的分布。作为一个支流珠江,东江(或东河)位于珠三角东部,为许多城市供应淡水,包括广州,东莞,深圳,香港等。这个区域的高度密集型产业与各种化学品的排放有关,可能会对河流和生态系统构成潜在污染。 4.Certain organic chemicals pose a threat to the health and safety of people,particularly those working within a contained working environment and in the industrial sector.While such pollutants may be found in aqueous sources,there is also growing concern over gaseous pollutants.Indoor air quality is particularly a growing concern and the 广东工业大学研究生试卷用纸,共6页,第2页

广东工业大学 线性代数 真题 A

广东工业大学试卷B 卷用纸,第 1 页 共 6 页 学 院 : 专 业: 学 号: 姓 名 : 装 订 线 广东工业大学考试试卷 ( B ) 课程名称: 线 性 代 数 考试时间: 第 16 周星期 三 (12月20日)8:30—10:05 题号 一 二 三 四 五 六 七 总 分 得分 评分人 一. 填空(每题4分,共24分) 1.若{ EMBED Equation.3 |02221=+-k k ,则 . 2.向量组,,线性 关. 3.若,则 . 4. 设 矩阵 , 其中 都是 维列向量, 若 , 则行列式 . 5.设是三阶矩阵, 已知 则矩阵的秩为 . 6. 设 阶矩阵 A 满足 , 且 则 .

广东工业大学试卷B 卷用纸,第 2 页 共 6 页 二.选择(单选,每题4分,共24分) 1.若齐次线性方程组?? ???=--=+=++050403z y ax z y z ay x 有非零解,则a 的值可能为 [ ] (A ) 1- (B ) 1 (C ) 2 (D ) 2- 2.设A 为n 阶可逆阵,则下列不正确的是: [ ] ()A 0≠A ()B 存在n 阶矩阵B ,使得I AB = ()C n r A r <=)( ()D A 必能表为一些初等矩阵的乘积. 3.设A 为三阶方阵,且已知2||-=A ,则|3|A 的值为: [ ] ()A 24- ()B 6 ()C 54- ()D 6- 4. 设n 阶方阵满足 ABC E =,则必有 [ ] ().A ACB E = ().B CBA E = () .C BAC E = ().D BCA E = 5.下列说法不正确的是: [ ] A 设A 为n 阶对称矩阵,则有T A A =; B 设A 为l m ?阵,B 为n l ?阵,若O AB =,则必有O A =或O B =; C 设B A ,均为n 阶可逆阵,则必111)(---=A B AB ; D 设B A ,均为n 阶方阵,则有B A AB ?=。 6. n 阶方阵A 具有 n 个不同的特征值是A 与对角矩阵相似的 [ ] (A) 充分必要条件. (B) 充分而非必要条件. (C ) 必要而非充分条件. (D) 既非充分也非必要条件. 三.(10分) 已知4阶行列式 11 211111,01 212004 D --= D 的(,)i j 元的代数余子式依次记作,ij A 求 4142434441424344234.A A A A A A A A ++++++及

广东工业大学硕士研究生复试英语英文面试自我介绍

Self-introduction 自我介绍 Name:William Shakespeare Graduated University:××××××××××× Major:English Literature Admission Time:20XX-09-01—20XX-06-30 Telephone:+86×××××××(MP) E-mail:520521××××@https://www.wendangku.net/doc/d87874334.html, (后附范文5篇及10类常见问题解答,总有一个适合你!) 20XX年XX月XX日

目录 范文一(英文) (3) 范文一(中文) (3) 范文二(英文) (3) 范文二(中文) (3) 范文三(英文) (3) 范文三(中文) (3) 范文四(英文) (3) 范文四(中文) (3) 范文五(英文) (3) 范文五(中文) (3) 十类常见问题解答 (3) (一)"What can you tell me about ......?".. (3) (二)"What would you like to be doing......?" .. (3) (三)"What is your greatest strength ?" (3) (四)"What is your greatest weakness?" (3) (五)"How do you feel about your progress to date?" (3) (六)行为面试问题 (3) (七)压力面试问题 (3) (八)案例面试问题 (3) (九)非常规问题 (3) (十)其他常见的英语面试问题 (3)

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