专业英语参考答案
英语专业高级英语阅读期末考试答案
英语专业高级英语阅读期末考试答案一、选择题1、A. The author’s attitude towards the issue of mental health is _______.本文A) supportive本文B) ambiguous本文C) critical本文D) objective答案：(A) supportive。
文章中作者多次提到“支持”和“同意”的观点，如“同意多数人的观点”、“支持这一说法”，因此可以判断作者的态度是支持的。
2、B. In the sentence “In my view, this is one of the most important aspects of education.” the author’s purpose in mentioning the importance of mathematics is to _______.本文A) express a personal opinion本文B) persuade readers to agree with him/her本文C) introduce a new idea本文D) support a conclusion with evidence答案：(C) introduce a new idea。
在句子中，作者提到“在我看来，这是教育最重要的方面之一”，这表明作者要引入一个新的想法，即数学的重要性。
因此，选项(C)是正确的。
3、D. The word “incongruity” in the sentence “The incongruity of the situation made me laugh.” is defined as _______.本文A) oddity本文B) mismatch本文C) hilarity本文D) irony。
答案：(A) oddity。
根据上下文，“incongruity”指的是一种不协调的情况，而选项中只有“oddity”符合这个意思，因此答案为(A)。
大学专业用途英语课后习题答案
大学专业用途英语课后习题答案1. You'd better ( ) a copy of the whole article for yourself. [单选题] *A. make(正确答案)B. makingC. to makeD. made2. He is very strict. It is no use ( ) yourself to him. [单选题] *A. explainedB. to explainC. explaining(正确答案)D. explain3. All people must pull together ( ) the project can be finished on schedule. [单选题] *A. as thoughB. ifC. even thoughD. in order that(正确答案)4. I wish I ( ) shopping with you yesterday, because I was very bored at home then. [单选题] *A. had gone(正确答案)B. would goC. could have goneD. went5. If ( ) in a warm place, these flowers will bloom in late May. [单选题] *A. to plantB. planted(正确答案)C. plantD. planting6. My father recommended two new books to me, ( ) seemed to be very interesting. [单选题] *A. both of thatB. all of thatC. both of which(正确答案)D. all of which7. Tom will never forget the days ( ) he lived in the remote village with his parents. [单选题] *A. whatB. whichC. when(正确答案)D. why8. Don't expect too much from her. The more you expect, ( ) you will become. [单选题] *A. the disappointedB. more disappointedC. the most disappointedD. the more disappointed(正确答案)9. The weather is quite fine. Let's go swimming, ( )？ [单选题] *A. will youB. shall we(正确答案)C. do weD. do you10. There is no doubt that the residents living in this building can have free ( ) to the swimming pool. [单选题] *A. excessB. access(正确答案)C. accelerateD. assess11. If you want to strengthen your friendship with your friends, you should ( ) more time communicating with them. [单选题] *A. spend(正确答案)B. takeC. payD. cost12. Tom has been nervous for three days, since he will have a(n) ( ) for the manager's job. [单选题] *A. reviewB. viewC. chatD. interview(正确答案)13. But for your advice, I ( ) the task arranged by the leader yesterday. [单选题] *A. shall not finishB. could not have finished(正确答案)C. shall finishD. could finish14. The aim of this meeting is ( ) how to solve the serious crisis. [单选题] *A. to discuss(正确答案)B. discussingC. to discussingD. discussed15. This building is named ( ) his name in memory of his great invention. [单选题] *A. upB. after(正确答案)C. atD. in16. ( ) are quite humorous and everyone likes making friends with them. [单选题] *A. The Bushes(正确答案)B. A BushC. BushesD. The Bush17. One way to manage time wisely is to give ( ) to what is the most important. [单选题] *A. principleB. permissionC. priority(正确答案)D. process18. The teachers don't know ( ), because the meeting rooms are being decorated. [单选题] *A. where should the meeting be heldB. which should the meeting be heldC. which the meeting should be heldD. where the meeting should be held(正确答案)19. Due to the outbreak of the epidemic, many outdoor activities have been ( ). [单选题] *A. called forB. called off(正确答案)C. called backD. called in20. According to the report, some experts ( ) the shop with selling cups with insulting ads. [单选题] *A. charge(正确答案)B. accuseC. blameD. condemn21. Some people ( ) it for granted that what they pick up in the street belongs to them. [单选题] *A. makeB. take(正确答案)C. getD. regard22. Because there is enough time, the teacher advises students ( ) their papers again. [单选题] *A. examinedB. to examine(正确答案)C. to examiningD. examine23. Many people suffer from hunger in this country ( ) the decrease of food imports this year. [单选题] *A. instead ofB. regardless ofC. due to(正确答案)D. as to24. I ( ) reading the novel by yesterday, so I buy a new novel today. [单选题] *A. had finished(正确答案)B. finishedC. finishD. would finish25. Most foreign people think ( ) very difficult to learn to write Chinese characters. [单选题] *A. thatB. thisC. it(正确答案)D. one26. Mary heard her name called by someone, whose voice was very familiar ( ) her. [单选题] *A. withB. to(正确答案)C. onD. in27. One ( ) of extra-curricular activities is that the kids involved can gain friendship. [单选题] *A. flexibilityB. benefit(正确答案)C. privilegeD. interest28. I will tell the truth to him if he ( ) the funeral the day after tomorrow. [单选题] *A. would attendB. will have attendedC. attends(正确答案)D. will attend29. His ( ) of the accident conflicted with that of the other witnesses. However, I believed what he said was true. [单选题] *A. expectationB. instructionC. responseD. account(正确答案)30. Every time I run into difficulty, he is always the first ( ) help. [单选题] *A. to be offeredB. to offer(正确答案)C. offerD. offering31. Many women have to resign in order to ( ) their children wholeheartedly. [单选题] *A. bring up(正确答案)B. put upC. break upD. build up32. My good friend Lily told me that she ( ) to New York the next month. [单选题] *A. wentB. goesC. would go(正确答案)D. will have gone33. It is natural that people ( ) feel upset for no reason. It usually won't last too long. [单选题] *A. sometimes(正确答案)B. some timesC. a timeD. some time34. Our company wants to invest in the property market, so we look forward to ( ) with that company. [单选题] *A. cooperateB. cooperating(正确答案)C. cooperatedD. being cooperated35. It is really ( ) to borrow money from your elder sister just to help a selfish stranger pay off his debt. [单选题] *A. ridiculous(正确答案)B. stubbornC. splendidD. popular36. The kids in the kindergarten help each other and never quarrel, thus creating a ( ) atmosphere. [单选题] *A. commonB. lonelyC. peaceful(正确答案)D. steady37. You ( ) to make so many preparations; the job has been assigned to an experienced fellow. [单选题] *A. needn't have bothered(正确答案)B. shouldn't have botheredC. mustn't have botheredD. couldn't have bothered38. ( ) in the park yesterday afternoon, my mother met an old friend. [单选题] *A. To walkB. Walking(正确答案)C. WalkD. Walked39. Mary behaved in a specially confident manner ( ) she had understood the problem completely. [单选题] *A. as if(正确答案)B. whetherC. althoughD. than40. As we all know, success results from hard work; ( ) efforts, nothing can be achieved. [单选题] *A. except forB. without(正确答案)C. despiteD. besides41. His advice is that your father ( ) more exercise outdoors in the morning. [单选题] *A. doneB. will doC. should do(正确答案)D. does42. From this book, you can know ( ) those animals escape from their natural enemies. [单选题] *A. whoB. how(正确答案)C. whereD. it43. Plants are very ( ) to climate change. Therefore, many tree species are faced with extinction because of global warming. [单选题] *A. sensibleB. consciousC. sensitive(正确答案)D. independent44. His two dogs made a mess in his room, ( ) he didn't want to punish them. [单选题] *A. andB. orC. becauseD. but(正确答案)45. Hearing the words, he didn't seem to be offended; ( ), he looked very happy. [单选题] *A. in a wordB. in other wordsC. on the wholeD. on the contrary(正确答案)46. ( ) the salary is rather low, many young people have resigned in recent months. [单选题] *A. Because(正确答案)B. ForC. AfterD. So that47. What the little girl wants ( ) a pen, and what her elder brother wants ( ) two books. [单选题] *A. are; areB. is; isC. is; are(正确答案)D. are; is48. Most universities don't ( ) that every student can graduate with a certificate if they don't study hard. [单选题] *A. guarantee(正确答案)B. provideC. requireD. complete49. The company has recently taken on fifty people ( ) live in the local area. [单选题] *A. whichB. whoseC. thoseD. who(正确答案)50. All the afternoon my colleagues and I ( ) a report in the meeting room. [单选题] *A. prepareB. were to prepareC. have been preparing(正确答案)D. had been preparing5I. It is no use worrying about the future all the time. No one knows what will ( ) next minute. [单选题] *A. take placeB. get onC. disappearD. happen(正确答案)52. Alice, please turn down the music. I ( ) an important phone call at present. [单选题] *A. answerB. answeredC. have answeredD. am answering(正确答案)53. After you use my dictionary and English book, you should place them ( ) they used to be. [单选题] *A. the momentB. where(正确答案)C. whenD. that54. ( ) runs the fastest in the competition will be given an expensive prize. [单选题] *A. Whoever(正确答案)B. WhomeverC. WhomD. Who55. If you want these new employees to work out the answer, two hours and a half ( ) not enough. [单选题] *A. to beB. beingC. areD. is(正确答案)56. Only after they had examined the machine for several hours ( ) the problem. [单选题] *A. they foundB. did they find(正确答案)C. they findD. do they find57. ( ), he doesn't know how to get on with other people. [单选题] *A. Adult as he is(正确答案)B. Adult he is asC. Adult he as isD. An adult as he is58. It was ( ) that they went for a picnic in the park last weekend. [单选题] *A. so nice a weatherB. such nice weather(正确答案)C. nice weather soD. too nice weather59. It is advisable to adjust the measures on the ( ) of short-time predictions. [单选题] *A. basis(正确答案)B. baseC. foundationD. ground60. ( ) slowly he runs! I don't think he may attend the lecture on time. [单选题] *A. WhatB. ItC. How(正确答案)D. Whether。
2024年自考-自考专业(英语)-英语词汇学考试历年真题常考点试题4带答案
2024年自考-自考专业(英语)-英语词汇学考试历年真题常考点试题带答案（图片大小可任意调节）第1卷一.单选题(共20题)1.We are interested in the weather because it _______ us so directly—what we wear, what we do and even how we feel.A.benefitsB.affectsC.guidesD.effects2.“Woman” becomes “ Frau” in German, “femme” in French and “f ùnǔ” in Chinese. This example shows that in different languages the same concept can be represented by different ______ .A. soundsB.formsC.unitiesD.meanings3.Modern economics ________ the country ’s agricultural poli cies.A.undergoesB.understandsC.underliesD.undertakes4.Idioms nominal in nature have a(n) ______ as the key word in each and function as a noun in sentences.A.verbB.adjective5.Oxford Advanced Learner s Dictionary ’ , 3rd Edition (1980), is among the best-known British ______ dictionaries.A.unabridgedB.deskC.pocketD.bilingual6.______ of meaning is a process by which a word that originally had a specialized meaning has now become generalized.A.DegradationB.ElevationC.ExtensionD.Specilization7.Each of us should _______ aside a few minutes to have a rest every day.A.pushB.provideC.turnD.set8.You should help them ________ when your friends quarrel with each other.e into sighte to termse into playe to power9.Collins COBUILD English Language Dictionary (1987) has some unique features such as definition, extra column and ______.A. pronunciationB.grammar codesage examplesnguage codes10.Modern English vocabulary develops through the following channels EXCEPT ______.A.creationB.borrowingC.semantic changeD. lexical change11.The Indo-European language family is made up of the languages of the following EXCEPTA.EuropeB.the Far EastC.IndiaD.the Near East12.If you try to learn too many things at a time, you may get ________.A. concentratedB.confusedC.confirmedD.convinced13.What he told us was more of a(n) ________ than a reality.A.illusionB.demonstrationC.illustrationD.reputation14.Aliens are borrowed words which have retained their original pronunciation and spelling. Which of the following words comes from Chinese?A.BazaarB.KowtowC.RajahD.Blitzkrieg15.To write up his novel, John is looking for an environment free ________ outside distraction.A. onB.withC.fromD.in16.It took a few seconds for her eyes to ________ to the darkness.A.allocateB.adoptC.applyD.adjust17.Which of the following is NOT one of the extra-linguistic factors that cause changes in meaning?A.Cultural reason.B.Historical reason18.The differences between synonyms exist in the following areas EXCEPT ______.A.denotationB.connotationC.referenceD.application19.Generally, a dictionary covers the following contents EXCEPT ______.A. spellingB.pronunciationC.definitionD.syntactical rules20.In grammatical context, the meaning of a word may be influenced by the ______in which it occurs.A.structureB.sentenceC.phraseD.clause第2卷一.单选题(共20题)1.Among the following words, “ ______ ” contains a negative prefix.A.amoralB.de-composeC.antiwarD.foretell2.Which of the following words does NOT have suffixes?A.NorthwardB.WidenC.HappyD.Worker.3.One can figure out the meaning of “ airmail ” to be “ mail by air ” by its ______.B.morphological motivationC.semantic motivationD.etymological motivation4.Which of the following is partially converted?A. A whiteB.A drunkC.The poorD.Finals5.Washing the food down with water as a substitute ________ chewing is not a good habitA.ofB.forC.toD.from6.Which of the following statements is TRUE?A.Grammatical meaning refers to the part of speech, tenses of verbs and stylistic features ofwords.B.Unlike conceptual meaning, associative meaning is unstable and indeterminate.C.Affective meaning indicates the listener ’ s attitude towards the person or thing in questionD.Collocation cannot affect the meaning of words.7.Police are ________ the disappearance of two children.A. looking upB.looking throughC.looking intoD.looking on8.We were told that the stone figure _______ back to the 16th century was of great value.A. datedB.datingingD.kept9.Which of the following is NOT one of the context clues?A.DefinitionB.PolysemyC.SynonymyD.Antonymy.A. whatB.thatC.whichD.why11.Happiness doesn ’t alway s _______ money.A.go throughB.go in forC.go withD.go over12.There is an ambiguity in the sentence “ He is a hard businessman ” due to ______.A.polysemyB.homonymyC.synonymyD.antonymy13.A mong the following words, “ ______ ” does NOT have inflectional affixes.A. likedB.children’sC.happierD.it’s14.We cannot leave this tough job to a person ________.A.who nobody has confidenceB.in whom nobody has confidenceC.for whom nobody has confidenceD.who everyone has confidence of15.It has been years ________ I returned home.A.afterB.thatC.sinceD.when16.Which of the following is NOT one of the characteristics of idioms?A.The part of speech of each element in an idiom is very important.B.The constituents of idioms can eplaced. ’ t be rC.The word order in an idiom can ’ t be changed.D.An idiom functions as one word.breaks he wanted.A.longB.shortC.muchD.little18.The professor worked for 7 hours at a ________.A.stretchB.extendC.expandD.prolong19.Which of the following is NOT one of the main sources of new words in the present-day English vocabulary?A.The rapid development of modern science and technology.B.Social, economic and political changesC.The invasion of foreign countries.D.The influence of other cultures and languages.20.How many monomorphemic words are there in the following words? cats boss work improper triedA.1B.2C.3D.4第1卷参考答案一.单选题1.参考答案： B本题解析：affect 多作为动词来用，表示影响。
专业硕士研究生英语课后答案
Unit 1Excuse NotesWord Bankanthology: n. a collection of artistic works which have a similar form or subject, often those considered to be the best 诗选/文选attest :v. to show sth. or to say or prove that sth. is true 证明choke: v. to stop breathing 窒息，哽住devilment : n. behavior that causes trouble but is usually intended to be playful or amusing 恶作剧distribute: v. to give sth. out to several people, or to spread or supply sth. 分发，发送epiphany: n. understanding 理解forge: v. to make an illegal copy of sth. in order to deceive 伪造，铸造gem: n. sb. or sth. that is very good, pleasing or useful 精品，非常有用的人genuine: adj. sth. genuine is what it seems to be; real 真的lucid: adj.clearly expressed and easy to understand or (of a person) thinking or speaking clearly 易懂的，明白的，清醒的omit: v. to fail to include or do sth. 省略，疏忽plight: n. an unpleasant condition, especially a serious, sad or difficult one 处境，状态seduction: n. the attractive quality of sth. 诱惑superintendent: n. people who is in charge of work done in a particular department, office, etc. 主管，负责人treason: n. lack of loyalty to one’s country, especially by helping its enemies or attempting to defeat its government 通敌，叛国罪vulgar: adj. rude and likely to upset or anger people 无理的，粗俗的Phrases and Expressionsbe evicted from: to be forced to leave somewhere 驱逐，赶走be worth of: deserving respect, admiration or support 值得的glance at: to give a quick short look 一瞥turn into: to change into 进入，（使）变成Reading ComprehensionChoose the best for each of the following.1. According to the passage, the teacher ____D____.A. is angry with his students.B. does not like his students forging excuse notes.C. blames the parents.D. teaches a successful writing class.2. Mikey missed school ____D____.A. because his grandmother fell down from the stairsB. because he did not like his teacherC. because his parents wanted him to be homeD. because he did not want to go to school3. When the students forged the excuse notes, they were ____A____.A. very smart and imaginativeB. boredC. indifferentD. excited4. The principal of the school ____B____.A. blamed the teacher for what he had done in class.B. praised the teacher for what he had done in class.C. was disappointed with the teacher.D. fired the teacher.5. Which of the following statements is NOT true? ( D )A. The students enjoyed the teacher’s writing class very much.B. The students were very creative in forging excuse notes.C. The teacher enjoyed teaching writing.D. The students did not enjoy the teacher’s writing class.II. Complete the following summary (summarize) of the text by filling in the blanks with words. The initial letter of each word has been given to you.His methods anything but conventional, Mr. McCourt created a lasting impact on his students through imaginative assignments in his (1)creative writing. He found that some of his students (2) forged excuse notes in the name of their parents. He does not angry with what the students had done; instead, he divided those notes into two (3)piles, one for the (4)genuine ones written by parents, the other for forgeries. The students were so smart that they could create a variety of (5)excuses. So the teacher decided to dig up their (6)talent in writing by asking them to write excuse notes. The students were so (7)absorbed in the writing that they almost forgot to have (8)lunch.At last the principal (9)praised the teacher for this successful teaching method. Both the teache and the students were happy about the writing class. And the teacher realized everyone (10)needed an excuse. Understanding is essential to the teacher and the students.VocabularyI. Choose the answer that best completes each sentence.1. A number of __D___ works of art have been sold as genuine.A. falseB. beautifulC. famousD. forged2. To ___B__ one’s power is to commit a crime and eventually end up in jail.A. accuseB. abuseC. deduceD. excuse3. Seeing the speeding car, the policeman __B__ the driver to pull up at the curb.A. reckonedB. beckonedC. softenedD. stiffened4. Unfortunately, he hit a traffic jam and missed the train __B___ a few minutes.A. withB. byC. beforeD. for5. She gave a clear and __A___ account of her plans for the company's future.A. lucidB. dullC. unclearD. ambiguous6. Isn't it rather __C___ to talk about how much money you earn?A. politeB. boringC. vulgarD. pleasant7. The books will be __D___ free to local schools.A. contributedB. tributeC. attributedD. distributed8. The editor required him to __A___ some details of the article.A. omitB. permitC. summitD. illuminate9. Few of us can be unmoved by the __C___ of the Romanian orphans.A. lightB. mightC. plightD. moonlight10. I have to __B___ my reputation.A. detectB. protectC. intactD. preventII. Fill in the blanks with the words or phrases given below. Change the form where necessary.superintendent choke attest forge gemgenuine lucid omit turn into excuseglance at evicted disguise worthy imagination1. In the US. a school is superintendent in charge of the schools in a particular area.2. Thousands of people came out onto the streets to attest their support for the democratic opposition party.3. The expensive purse is made of genuine leather.4. Can you turn this article into English?5. She took a glance at her watch.6. I know why this happened. You don't have to find any excuse.7. He was evicted from the pub for drunken and violent behavior.8. This emperor is said to have paid many personal visits to various counties disguise as an ordinary citizen.9. Every year she makes a large donation to a worthy cause.10. Children often have very vivid imagination.TranslationPut the following paragraphs into Chinese.1. Most parental-excuse notes I received back in those days were penned by my students. They'd been forging excuse notes since they learned to write, and if I were to confront each forger I'd be busy 24 hours a day.2. My heart sank as the principal entered, along with the superintendent of schools. Neither acknowledged me. They walked up and down, peering at papers. The superintendent picked one up, showed it to the principal.3. Sooner or later, I figured, everyone needed an excuse. Also, if we sang today wecould sing tomorrow, and why not? You don’t need an excuse for singing.参考译文：1.我每天收到以父母名义写的请假条，很多是学生自己写的。
《计算机专业英语》习题参考答案
《计算机专业英语》习题参考答案Lesson 1I.1. Operating System2. Fetch-evaluate-execute3. Front-side bus4. Dual-core processor5. Basic Input/Output System(BIOS)II.1. 指令是特定各式的二进制数列，它们对于每台机器都是唯一的。
2. CPU是中央处理单元的简称，每个字母分开发音。
3. 大多数计算在中央处理器中进行。
4. 双核是指一个处理器上有两个完整运算内核的CPU。
5. 处理器：是微处理器或CPU的缩写。
6. 集成电路：即芯片，是由半导体材料制成的一种电子设备。
III.1. F2. T3. TIV.1.ALU, CU, Register2.memory3.processor4.the CPULesson 2I.1.Static Random Access Memory(SRAM)2.Dynamic Random Access Memory(DRAM)3.Virtual Memory4.Physical Memory5.Level 1 Cache6.Level 2 Cache7.HDD access speedII.1.动态随机存储器之所以称为“动态”是因为它每秒钟被刷新数千次。
2.RAM：是计算机中存储操作系统、应用程序和当前正是用数据的地方。
3.ROM由计算机中一小块长寿命电池供电。
4.RAM缓存是由高速静态随机存储器构成的存储器。
III.1. F2. F3. F4. TIV.1. non-volatile2. compiler3. volatile4. DRAMLesson 3I.1. Motherboard2. PC Case3. Hard Disk Drive(HDD)4. Optical mouse5. RAM6. Mobile DiskII.1.PC是有很多组件构成的一个系统。
英语专业考试试题及答案
英语专业考试试题及答案一、词汇与语法（共20分）1. The word "flourish" is most similar in meaning to which of the following?A. ProsperB. WitherC. StagnateD. Perish答案：A2. Which sentence is grammatically correct?A. She has been studying English for three years.B. She has been studied English for three years.C. She had studied English for three years.D. She had been studied English for three years.答案：A二、阅读理解（共30分）阅读以下短文，然后回答问题。
Passage 1In recent years, the popularity of online education has surged. It offers flexibility and convenience, allowing students to learn at their own pace and from any location.3. What is the main idea of the passage?A. The drawbacks of online education.B. The benefits of online education.C. The challenges faced by traditional schools.D. The decline in the popularity of traditional schools.答案：B4. According to the passage, what is one advantage of online education?A. It is less expensive.B. It requires students to be present in a classroom.C. It provides a structured learning environment.D. It allows for flexibility and convenience.答案：DPassage 2The environmental impact of plastic waste is a growing concern worldwide. Many countries are implementing policies to reduce plastic use and promote recycling.5. What is the focus of the passage?A. The economic impact of plastic waste.B. The environmental impact of plastic waste.C. The technological advancements in plastic production.D. The history of plastic production.答案：B6. What action are countries taking in response to the issue mentioned in the passage?A. Increasing plastic production.B. Encouraging the use of plastic bags.C. Implementing policies to reduce plastic use.D. Ignoring the issue of plastic waste.答案：C三、完形填空（共20分）Read the following passage and fill in the blanks with the correct options.Passage 3The internet has transformed the way we communicate and access information. It has made our lives more convenient, but it has also brought about new challenges.7. The internet has _______ the way we communicate.A. simplifiedB. complicatedC. revolutionizedD. limited答案：C8. The passage suggests that the internet has both advantages and _______.A. opportunitiesB. disadvantagesC. benefitsD. drawbacks答案：D四、翻译（共15分）Translate the following sentences from English to Chinese.9. With the development of technology, robots are becoming more and more intelligent.答案：随着技术的发展，机器人变得越来越智能。
考研专业英语试题及答案
考研专业英语试题及答案一、选择题（每题2分，共20分）1. The phrase "break a leg" is commonly used to mean ________.A. To cause someone to fallB. To wish someone good luckC. To cause a failureD. To cause a break in a performance答案：B2. Which of the following is NOT a characteristic of academic writing?A. Formal languageB. Clear structureC. Personal opinionsD. Evidence-based arguments答案：C3. In the context of scientific research, "hypothesis" refers to a ________.A. Final conclusionB. Tentative explanationC. Unproven theoryD. Confirmed fact答案：B4. The term "sustainability" in environmental studies usually implies ________.A. The ability to be maintainedB. The ability to be soldC. The ability to be recycledD. The ability to be ignored答案：A5. The word "disseminate" in academic context means to________.A. Spread information or knowledgeB. Gather information or knowledgeC. Hide information or knowledgeD. Analyze information or knowledge答案：A6. Which of the following is the correct way to cite a book in APA format?A. Author, A. A. (Year). Title of the book. Publisher.B. Author, A. A. (Year). Title of the book. Journal.C. Author, A. A. (Year). Title of the book. Website.D. Author, A. A. (Year). Title of the book. Conference.答案：A7. In the field of economics, "opportunity cost" refers to________.A. The cost of the next best alternativeB. The cost of the best alternativeC. The cost of the worst alternativeD. The cost of the same alternative答案：A8. The phrase "pro bono" is used to describe ________.A. Legal services provided at no costB. Legal services provided for free to friendsC. Legal services provided for a reduced feeD. Legal services provided for a profit答案：A9. In the context of literature, "allegory" is a narrative technique that ________.A. Describes a real eventB. Tells a story with a hidden meaningC. Is based on a true storyD. Is a personal account答案：B10. The term "peer review" in academic publishing refers to the process of ________.A. Reviewing by the general publicB. Reviewing by the author's peersC. Reviewing by the author's studentsD. Reviewing by the author's colleagues答案：B二、填空题（每题2分，共20分）1. The ________ of a scientific paper typically includes the research question, hypothesis, and methodology.答案：abstract2. In a research study, the ________ is the group that receives the standard treatment or no treatment at all.答案：control group3. The ________ is the process of systematically collecting and analyzing data to answer a research question.答案：research methodology4. A ________ is a type of literature review that synthesizes findings from multiple studies on a topic.答案：meta-analysis5. The ________ is the part of a research paper where the writer discusses the implications of the findings.答案：discussion6. In statistics, the ________ is a measure of the extent to which two variables are linearly related.答案：correlation coefficient7. ________ is the process of making a formal request for permission to use someone else's work.答案：copyright clearance8. A ________ is a formal statement of a problem or question that is to be solved or answered.答案：research problem9. In a research study, the ________ is the group that receives the treatment or intervention being tested.答案：experimental group10. ________ is the process of evaluating the quality of a research study based on established criteria.答案：methodological critique三、简答题（每题10分，共30分）1. Explain the difference between qualitative andquantitative research methods.答案：Qualitative research methods focus on understanding social phenomena through non-numerical data, such as interviews, observations, and documents. It aims to explore and describe complex social behaviors and experiences. On the other hand, quantitative research methods involve collecting numerical data and using statistical techniques to test hypotheses and make generalizations. It aims to measure and quantify relationships between variables.2. What is the significance of a literature review in a research paper?答案：A literature review in a research paper is significant because it provides a comprehensive overview of existing knowledge on a topic. It helps to establish the context of the research, identifies gaps in the。
大学英语专业试题及答案
大学英语专业试题及答案一、听力理解（共20分）Section A1. What is the man's major?a) Biologyb) Physicsc) Chemistryd) MathematicsAnswer: b) Physics2. Why does the woman suggest going to the library?a) To borrow a bookb) To study for an examc) To meet a friendd) To find a quiet place to talkAnswer: b) To study for an examSection BListen to the conversation and choose the best answer.3. What time does the meeting start?a) 3:00 PMb) 3:30 PMc) 4:00 PMd) 4:30 PMAnswer: a) 3:00 PM4. What is the woman's opinion about the lecture?a) It was informative.b) It was boring.c) It was too long.d) It was confusing.Answer: a) It was informative.二、阅读理解（共30分）Passage 1In this passage, the author discusses the importance of environmental conservation and the role of individuals in preserving the planet.5. What is the main topic of the passage?a) Educationb) Environmental conservationc) Technologyd) HealthAnswer: b) Environmental conservation6. According to the author, what can individuals do to help the environment?a) Plant more treesb) Use public transportationc) Recycled) All of the aboveAnswer: d) All of the abovePassage 2The passage describes the history and cultural significance of a famous landmark.7. When was the landmark built?a) 1600sb) 1700sc) 1800sd) 1900sAnswer: b) 1700s8. What is the landmark's primary function?a) A museumb) A place of worshipc) A historical sited) A government buildingAnswer: c) A historical site三、词汇与语法（共20分）Section AComplete the sentences with the appropriate words.9. The company has been _______ since its inception.a) thrivingb) decliningc) stagnantd) bankruptAnswer: a) thriving10. Despite the heavy rain, we decided to _______ our journey.a) postponeb) cancelc) continued) interruptAnswer: c) continueSection BChoose the correct answer to complete the sentence.11. She is _______ to win the competition.a) likelyb) unlikelyc) impossibled) possibleAnswer: a) likely12. He _______ his success to hard work and determination.a) attributesb) contributesc) donatesd) subscribesAnswer: a) attributes四、写作（共30分）Task: Write an essay on the topic "The Impact of Social Media on Modern Society."Answer: (This section would require a written response from the student, but for the sake of this example, I'll provide a brief outline.)1. Introduction- Briefly introduce the topic and the importance of social media in modern society.2. Positive Impacts- Discuss how social media has connected people globally. - Mention the role of social media in promoting businesses and products.3. Negative Impacts- Address the issue of cyberbullying and its effects on mental health.- Discuss the spread of misinformation and fake news.4. Conclusion- Summarize the main points and suggest ways to mitigate the negative impacts.五、翻译（共20分）Section ATranslate the following sentences from English to Chinese.13. The rapid development of technology has changed our lives in many ways.- 翻译：技术快速发展在许多方面改变了我们的生活。
计算机专业英语课后答案
计算机专业英语课后答案第1章信息技术、互联⽹和你选择1. The keyboard, mouse display, and system unit are: 键盘、⿏标、显示器和系统单元是: hardware2. Programs that coordinate computer resources, provide an interface, and run applications are knownas: 协调计算机资源、提供接⼝和运⾏应⽤程序的程序被称为: operating systems3. A browser is an example of a: 浏览器就是通⽤应⽤程序的⼀个例⼦ general-purpose application4. Although not as powerful as a supercomputer, this type of computer is capable of great processingspeeds and data storage. 虽然没有超级计算机那么强⼤，但这种类型的计算机具有很⾼的处理速度和数据存储能⼒。
mainframe ⼤型计算机5. Apple' s Watch is what type of computer? 苹果⼿表是什么类型的电脑? wearable可穿戴6. RAM is a type of: RAM是存储器的⼀种 memory7. Unlike memory, this type of storage holds data and programs even after electrical power to thecomputer system has been turned off. 与内存不同的是，这种类型的存储即使在计算机系统断电后也能保存数据和程序 secondary8. The type of file created by word processors to save, for example, memos, term papers, and letters. 由⽂字处理程序创建的⽂件类型，如备忘录、学期论⽂和信件 document9. Uses the internet and the web to shift many computer activities from a user' scomputer to computerson the internet。
英语专业高级英语1课后paraphrase答案
1) Littledonkeys threadtheir way among the throngs of people2) Then as you penetra te deeperinto the bazaar, the noise of the entranc e fades away, and you come to the muted cloth-market.3) They narrowdown their choiceand begin the reallyserious busines s of beating the price down.4) He will price the item high, and yield littlein the bargain ing.5) As you approac h it, a tinklin g and banging and clashin g beginsto impinge on your ear.1) Serious looking men spoke to one another as if they were oblivio us of the crowdsabout them.2) The cab driver’s door poppedopen at the very sight ofa travele r.3) The ratherarresti ng spectac le of littleold Japan adriftamid beige concret e skyscra pers is the very symbolof the incessa nt struggl e between the kimonoand the miniski rt.4) I experie nced a twingeof embarra ssment at the prospec t of meeting the mayor of Hiroshi ma in my socks.5) The few America ns and Germans seemedjust as inhibit ed as I was.6) After three days in Japan, the spinalcolumnbecomes extraor dinari ly flexibl e.7) I was about to make my littlebow of assent, when the meaning of these last words sank in, jolting me out of my sad reverie.8) I thought somehow I had been spared.第五课1) Hitlerwas countin g on enlisti ng capital ist and Right Wing sympath ies in this country and the U. S. A.2) Winantsaid the same would be true of the U. S. A.3) My life is much simplif ied thereby.4) I will unsay no word that I have spokenabout it.5) I see the Germanbombers and fighter s in the sky, still smartin g from many a British whippin g, delight ed to find what they believe is an easierand a safer prey.6) We shall be strengt henednot weakene d in determi nation and in resourc es.7) Let us redoubl e our exertio ns, and strikewith unitedstrengt h while life and power remain.第六课1) The house detecti ve's piggy eyes surveye d her sardoni callyfrom his gross jowledface.2) Prettyneat set-up you folks got.3) The obese body shook in an appreci ativechuckle.4) He lowered the level of his incongr uous falsett o voice.5) The words spat forth with suddensavager y, all pretens e of blandne ss gone.6) The Duchess of Corydon– three centuri es and a half of in-bred arrogan ce behindher -- did not yield easily.7) "It is no go, old girl. I'm afraid. It was a good try."8) "That's more like it," Ogilvie said. He lit the fresh cigar, "Now we're getting somewhe re."9) his eyes sardoni callyon the Duchess as if challen ging her objecti on.10) The house detecti ve clucked his tonguereprovi ngly.第九课1)a man who becameconstan tly preoccu pied by the moral weaknes ses of mankind.2)Mark Twain first observe d and absorbe d the new America n experie nce, and then introdu ce it to the world in his books or lecture s.3)In his new profess ion he could meet peopleof all kinds.4)With no money and a frashat ed feeling, he accepte d a job as reporte r with Territo rial Enterpr ise in Virgini a City, ...5)Mark Twain began working hard to becamewell known locally as a newspap er reporte r and humoris t.6)and when Califor nia makes a plan for a new surpris e, the solemnpeoplein other statesof the U.S. smile as usual, makinga comment "that's typical of Califor nia".7)The man who had made the world laugh was himself consume d by bittern ess.第十课1) We have some cleverand unexpec ted tactics and we will surpris e them in the trial.1) We have some cleverand unexpec ted tactics and we will surpris e them in the trial.2) The case had come down upon me unexpec tedlyand violent ly.2) The case had come down upon me unexpec tedlyand violent ly.3) The fundame ntalis ts believe in a word-for-word accepta nce of what is said in the Bible.3) The fundame ntalis ts believe in a word-for-word accepta nce of what is said in the Bible.4) That all life had develop ed gradual ly from a commonorigina l organis m.4) That all life had develop ed gradual ly from a commonorigina l organis m.5) Let's accuseScopesof teachin g evoluti on and let the court decidewhether he is breakin g the law or not.5) Let's accuseScopesof teachin g evoluti on and let the court decidewhether he is breakin g the law or not.6) Peoplefrom the nearbymountai ns, mostlyfundame ntalis ts, came to support Bryan against those profess ors, scienti sts, and lawyers who came from the norther n big citiesand were not fundame ntalis ts.6) Peoplefrom the nearbymountai ns, mostlyfundame ntalis ts, came to support Bryan against those profess ors, scienti sts, and lawyers who came from the norther n big citiesand were not fundame ntalis ts.7) As my fathercomplai ned angrily, "That's no jury at all. “7) As my fathercomplai ned angrily, "That’s no jury at all.”8) He is here because unenlig htenme nt and prejudi ce are widespr ead and uncheck ed.8) He is here because unenlig htenme nt and prejudi ce are widespr ead and uncheck ed.9) Peoplehad to pay in order to have a look at the ape and to conside r careful ly whether apes and humanscould have a commonancestr y.9) Peoplehad to pay in order to have a look at the ape and to conside r careful ly whether apes and humanscould have a commonancestr y.10) And the crowd, who were mainlyfundame ntalis ts, took his words showing no fear as if they were prayers, interru ptingfrequen tly with "Amen".10) And the crowd, who were mainlyfundame ntalis ts, took his words showing no fear as if they were prayers, interru ptingfrequen tly with "Amen".。
专业英语试卷及答案
《专业外语》考试试卷（把答案写到答题纸上）一、Please translate the phrase below in Chinese（每词1分，共10分）1、turret lathe 六角车床，转塔车床2、electrofax 电子摄影;电子摄影机;电子照相3、tunnel diodes 隧道二极管4、electron trigonometry电子三角测量5、VLF Propagation 非常低频率的传播6、B2B e-commerce商业对商业的电子商务模式7、bit-synchronization system 位同步系统8、Nomenclature 术语9、CAPP Computer-Aided Process Planning计算机辅助工艺规程10、tool magazine 刀具库二、Please translate the phrase below in English（每词1分，共10分）1、开放式数控系统Open CNC system2、工程索引engineering index3、齿轮插床 gear slotter4、多头螺纹multiple thread5、差动滑轮differential pulley6、液压系统hydraulic system7、低碳钢low carbon steel8、自动上料装置Automatic feeding device9、曲轴销孔The crankshaft pin hole 10、批量生产quantity productivity三、Please translate the paragraph below in Chinese（共40分，1-5每题3分，6-10每题5分）1、The production of aluminum is second only to that of iron and steel.铝的产量仅次于钢和铁2、Even metal plates（金属板材）can be pierced through by laser beam（激光束）.金属板材可以用激光束刺开，打通。
2023年自考专业(英语)《高级英语》考试历年真题摘选附带答案
2023年自考专业(英语)《高级英语》考试历年真题摘选附带答案第1卷一.全考点综合测验(共20题)1.【单选题】Though she _____ and pleaded, he refused to go to the dance.A.coaxedB.admonished2.【单选题】His _____ and unwillingness to learn from others prevent him from being an effective member of the teamA.arroganceB.advantage3.【单选题】You can sterilize a needle by holding it in a ___________.A.flameB.fireC.blazeD.conflagration4.【单选题】We cannot _____ the country ’ s telecommunications to unqualified people。
A. trustB.entrust5.【单选题】Her mind had been __________ into such a condition as she could not very likely have imagined possible a few months since.A. taughtB.instructedC.schooledcated6.【单选题】The poor girl had much too high _______ of her own charms to suspect that the Count could be unfaithful to themA.an opinionB.a viewC.a sentimentD.an idea7.【单选题】We must try to create a more caring, more _____ society.A. compassionatepetitive8.【单选题】Then we shall go to the _____ _______ Duke Street, where we shall_______ Mohun;A.theater; in; meetB.theatre; on; meetC.theatre ; in; meet withD.theater9.【单选题】Rawdon Crawley had already fought three bloody duels, in which he gave ample ________ of his contempt for death.A.evidencesB.testimoniesC.attestationsD.proofs10.【单选题】It has all the _____ of a good detective story.A. ingredientsB.elementsponentsD.constituents11.【单选题】Which of the following sentences is the most proper?______A.The poor old fellow died lonely last night.B.The poor old fellow perished lonely last night.C.The poor old fellow kicked the bucket lonely last night.D.The poor old fellow departed lonely last night.12.【单选题】This _____ factor means that there is often a connection in appearance and temperament between parents and children.A.historicalB.hereditary13.【单选题】Compared with the _____ period last year, average temperatures have been low.A.correspondingB.related14.【单选题】He betrayed no _______ of discontent, except such as may follow evening?s drinking.A.emblemB.symbolC.signD.mark15.【单选题】In our culture, we are accustomed to sophisticated prescription drugs containing a _____ of chemical ingredientsA.plentyB.variety16.【单选题】Mrs. Jones had a _____ husband, who would do anything for her.A.faithfulB.steadfastC.staunchD.loyal17.【单选题】These days people are becoming more and more _____ about the food they eat.A.sophisticatedB.selective18.【单选题】The colloquial or spoken language is the language for the use of the ________.A.ignorantB.illiterateC.uneducatedD.unlearned19.【单选题】The slight change of weather can ______ her delicate healthA.influenceB.affectC.swayD.impact20.【单选题】The little hands of the child closed round the soldier?s finger ______ the mother looked up in his face with maternal pleasure.A.×B. ,C.andD.but第2卷一.全考点综合测验(共20题)1.【单选题】Imagine how many times restaurants and merchants had to change their posted prices during the _____ 1970s, when prices almost doubled.A.inflationaryB.extraordinary2.【单选题】Jack managed to get 147 tapes and 100 books plus lots of magazines through customs in a(n> _____ wayA.incredulousB.miraculous3.【单选题】After some very trifling stupid ______, she ventured to ask whether it was true that he was going away.A.speechB.conversationC.discourseD.talk4.【单选题】____ water is their energy source, ____ tropical cyclones are seasonal.A.Warm; ×B.Warm; thereforeC.When warm; ×D.Because warm; ×5.【单选题】Most storms occur between August and October, and early September is the riskiest period for ______ storms.A.chiefB.mainC.majorD.dominant6.【单选题】He would rather die than live in __________.A.ungracefulnessB.discreditC.dishonorD.shame7.【单选题】He had rebelled against his father wickedly, but he had died without even so much as confessing he was ______.A.wrongB.incorrectC.mistakenD.erroneous8.【单选题】I do not mean to insult the reader by pretending that I killed, for instance,a regiment of cavalry or swallowed a battery of guns, —such _______ tales would disgrace both the hearer and the teller.A.ridiculousB.ludicrousughableD.absurd9.【单选题】It was _____ and she did not know enough to analyze each problemproperly.A.encouragingB.exhausting10.【单选题】My aunt, whose absence was _____ for three weeks, was heartily welcome to remain away, for we were much merrier and more comfortable without her.A. lengthyB.longC.prolongedD.protracted11.【单选题】Those who knew her ladyship are ________ that she was a person quite capable of performing this feat, had she not wisely kept out of the way.A.cognizantB.consciousC.awareD.sensible12.【单选题】The thief made a ____ at the old lady?s purse.A. takeB.snatchC.graspD.seize13.【单选题】The following is a specimen of Black English. “ We?s safe, Huck, we?s safe! Jump up and crack yo ? heels, dat?s de good ole Cairo at las?, I jis knows it! ” This variety of English is characterized by the following except its ______.A.vocabularyB.spellingC.grammarD.pronunciation14.【单选题】In the last twenty years, breakthroughs in technology have _____ advanced the way we communicate, bringing us computers, cell phones and the Internet.A.profoundlyB.deeply15.【单选题】The following is a quarrel between a couple. “ The house is filthy with you, ” she cried. “ Then get out on it — it?s mine. Get out on it! ” he shouted. “ It?s me as brings th? money, not thee. ” The husband speaks a dialect, which can be seen from the following words except ________.A.onB.asC.meD.thee16.【单选题】Although each TV series will be rated on the basis of its usual content, the ratings can _____ from week to weekA.flowB.fluctuate17.【单选题】“Human capital”is used primarily to ______ human beings whose only purpose is to generate wealth for the upper class elite.A.pictureB.describeC.portrayD.depict18.【单选题】In “they?re all more ridiculous than a slapstick comedy” we find the use of a _________.A.simileB.metaphorC.ironyD.pun19.【单选题】“ You ask me for Julia, and you do not possess even an anna! (Here the old ”— rogue ______ broadly, as if he had made a capital pun.)A.grinnedB.smiledC.beamedughed20.【单选题】The poor lady ?s pang must have been increased when she thought of her rival, ______ was a favorite of the whole Court, ______ she was neglected.A. she; thereB.who; whereC.her rival; at the CourtD.the latter; but第1卷参考答案一.全考点综合测验1.正确答案：A2.正确答案：A3.正确答案：A4.正确答案：B5.正确答案：C6.正确答案：A7.正确答案：A8.正确答案：D9.正确答案：D10.正确答案：A11.正确答案：C12.正确答案：B13.正确答案：A14.正确答案：C15.正确答案：B16.正确答案：B17.正确答案：B18.正确答案：C19.正确答案：B20.正确答案：C第2卷参考答案一.全考点综合测验1.正确答案：A2.正确答案：B3.正确答案：D4.正确答案：D5.正确答案：C6.正确答案：C7.正确答案：A8.正确答案：D9.正确答案：B10.正确答案：D11.正确答案：C12.正确答案：B13.正确答案：A14.正确答案：A15.正确答案：C16.正确答案：B17.正确答案：B18.正确答案：A19.正确答案：A20.正确答案：B。
计算机专业英语作业答案(供参考)
计算机专业英语作业答案（供参考）计算机专业英语作业1第1－3章作业一．Vocabulary( 词汇)(一)．Translate the following words and expressions into Chinese(写出下列词组的汉语。
)1．central processing unit（CPU）中央处理器 2.title bar 标题栏3．operating system 操作系统4．personal computer 个人计算机5．menu bar 菜单栏6．desk publishing 桌面排版7．electronic spreadsheet 电子表格8．hard disk 硬盘9．database 数据库10．Cursor 光标(二)．Fill in the blanks with the corresponding English abbreviations.(根据汉语写出相应的英语缩写。
) 1．随机存储器RAM 2．只读存储器ROM3．传输控制协议TC P 4．数字视频光盘DVD5．通用串行总线USB 6．计算机辅助设计CAD7．计算机辅助制造CAM 8．中央处理器CPU(三)．Translate the following Chinese into English.(根据汉语写出相应的英语。
)1．键盘keybord 2．鼠标mouse 3．扫描仪scanner4．打印机printer 5．输入input 6．输出output7．显示器monitor 8．存储器storage 9．数据库database10．操作系统operating system 11．应用软件application software12．字处理器word processor 13．网络浏览器web browser二．Tell whether the following statements are true(T) or false(F).(判断正误。
2022年自考专业(英语)英语翻译考试真题及答案19
2022年自考专业(英语)英语翻译考试真题及答案一、Multiple Choice Questions Multiple Choice Questions (30 points, 2 points for each)A.Directions: This part consists of ten sentences, each followed by four different versions marked A, B, C and D、 Choose the one that is the closest equivalent of the original in terms of meaning and expressiveness.1、I guessed vaguely from my mother’s signs and from the hurrying to and fro in the house that something unusual was about to happen. ( )A.母亲给我打着手势，人们在屋里匆忙地走来走去，我模模糊糊地猜到有一件不寻常的事在四周发生了。
B.我从母亲打给我的模糊手势中和从人们在屋里匆忙地走来走去中预感到一件不寻常的事已经要发生了。
C.从母亲的手势和人们在屋里跑来跑去中，我模糊地预感到有不寻常的事要发生。
D.母亲给我打着手势，人们在屋里匆忙地走来走去，模模糊糊地预感到一件不寻常的事就要发生了。
2、 With the flood came the life-giving mud that made Egypt the granary of the ancient world.( )A.河水泛滥带来的泥沙，万物得以生长，这样埃及成为古代世界的粮仓。
B.河水泛滥带来了泥沙，万物得以生长，埃及就这样成了古代世界的粮仓。
C.随着河水的泛滥带来给予生命的泥沙，埃及就成为古代世界的粮仓。
专业英语课后习题答案
perpetuity: pv = c/r
growing perpetuity: pv = c/(r-g)
annuity: pv = (c/r) [1-1/(1+r)t]
growing annuity: pv = [c/(r-g)] [1-((1+g) / (1+r))t ]
concept questions - chapter 2
? what is the balance-sheet equation?
assets = liabilities + stockholders equity
? what three things should be kept in mind when looking at a balance sheet? accounting liquidity, debt vs. equity, and value vs. cost.
flows wcalculate the value of a stock with a dividend-growth (1)zero
growth;(2)constant growth (3)differential
(1)p=div/r (2)p=div/r-g (3)p=(div t+1 /r-g )/ (1+r))t
专业英语课后习题答案
【篇一：专业英语课后答案】
?what are the three basic questions of corporate finance?
a. investment decision (capital budgeting): what long-term investment strategy should a firm adopt?
英语专业写作1参考答案
英语专业写作1参考答案一、词汇运用1. 根据题目要求，使用所给词汇完成句子。
以下是参考答案：- The innovative approach has revolutionized the way we think about technology.- She was fascinated by the intricate details of theancient ruins.- The notorious criminal was eventually apprehended by the police.- The diverse cultural backgrounds of the studentsenriched the classroom discussions.- The delicate balance of power in the ecosystem is easily disrupted.2. 根据上下文，选择正确的词汇填空。
- Despite the adversity, he managed to overcome the challenges and succeed.- The allegation of corruption led to a thorough investigation.- The ambiguity of the law caused confusion among the citizens.二、语法结构1. 完成下列句子，使用正确的时态和语态。
- The project was completed successfully ahead of schedule. - She has been working on the research for the past threeyears.- The book was written by a renowned author and has received critical acclaim.2. 将下列句子改为被动语态。
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4-1I. Choose the answer into the blank according to the text:1. indispensable2. magnetic3. primary .4. time-varying5. laminations.6. leakageII. Translate the following into Chinese:从发明起变压器可能就是最有用的电气设备之一。
它能在一个交流电路中升高或降低电压或电流，它能使电路间隔离，它能升高或降低一个电容、电阻或电感元件的等效值。
更进一步变压器能使我们进行远距离电能的安全传输、分配到家庭和工厂。
一次、二次绕组的匝数取决于它们的相对电压。
高压绕组的匝数远大于低压绕组。
另一方面，高压绕组的电流很小，可以使用小截面的导体。
因此，一次绕组和二次绕组的用铜量大致相同。
实际上，由于每匝更长导致外线圈更重。
经常使用铝或者铜导体。
Ⅲ. Translate the following into English:三、汉译英The equivalent circuit already derived for the transformer with the secondary terminals open, can easily be extended to cover the loaded secondary by the addition of the secondary resistance and leakage reactance. Practically all transformers have a turns ratio different from unity although such an arrangement is sometimes employed for the purpose of electrically isolating one circuit from anther operating at the same voltage.4-2I. Choose the answer into the blank according to the text:1. rotor.2. flat-topped .3. commutator4. torque.5. armature.6. magnetic flux .II. Translate the following into Chinese:我们随着对直流发电机的认识开始研究旋转电机。
直流发电机的使用并不普遍，因为我们通常用的直流主要通过电子整流器产生。
这些整流器不需要任何移动不需要任何移动能把交流系统的电流转换成直流。
然而，对直流发电机的理解是重要的，因为通过它可以引入直流电动机的工作原理。
实际上许多工业上的直流电动机主要运行作发电机。
商业直流发电机和电动机是用同一方法建成，因此，任何直流发电机能运行为一台电动机，反之亦然。
由于它们相似的结构，发电机和电动机的基本特征相似。
因此，我们学习的关于直流发电机的任何知识都可以应用于直流电动机。
Ⅲ. Translate the following into English:The stator of a DC machine has salient poles and is excited by one or more field coils. The air-gap flux distribution created by the field winding is symmetrical about the centerline of the field poles. This axis is called the field axis or direct axis. As we know, the AC voltage generated in each rotating armature coil is converted to DC in the external armature leads are connected.4-3I. Choose the answer into the blank according to the text:1. versus2. speed.3. (1) The separately excited dc motor(2) The shunt dc motor4. separate.5. torque.6. armature reaction.II. Translate the following into Chinese:直流电动机的等效电路直流电动机的等效电路如图4.14所示。
在图中，电枢电路由理想电压源A E 和电阻A R 表示，这个表示法是整个转子的戴维宁等效电路，包括转子绕组，内磁极和如果有还有补偿绕组。
电刷压降用一个小电池表示，其极性与电机电流方向相反。
发电机中产生磁通的励磁绕组由电感F L 和电阻F R 表示。
独立的电阻表示用来控制励磁电流的外加可变电阻。
图 4.14 （a ）直流电动机的等效电路，（b ）忽略了电刷压降包括励磁电阻的简化等效电路Ⅲ. Translate the following into English:The application advantages of DC machines lie in variety of performance characteristics offered by the possibilities of shunt, series, and compound excitation. Some of these characteristics have touched upon briefly in this article. Still greater possibilities commutator. Thus the versatility of DC machine systems and their adaptability to control, both manual and automatic, are their outstanding features. 4-4I. Choose the answer into the blank according to the text:1. 36;2. stator;3. frequency;4. wye;5. high-speed;6. N and S.II. Translate the following into Chinese:商业用同步发电机有一个静止或旋转的直流磁场。
静止磁场同步发电机对外表现如直流发电机。
凸极产生切割旋转电枢的直流磁场。
电枢有三相绕组，其端部连接到安装在转轴上的滑环上。
与滑环接触的一套电刷使电枢与三相负载相连。
电枢由汽油发动机或其他什么动力源驱动。
当电枢旋转时，产生三相电压，其电压值取决于静止磁极数和旋转速度。
电压的频率取决于磁场的级数和转速。
静止磁场的发电机主要用于输出功率在5 kV A以下的发电机。
但是，对更大功率、安全、价低和更实用的是旋转直流磁场的发电机。
Ⅲ. Translate the following into English:The voltage diagrams make it possible to obtain the fundamental performance characteristics of a machine by means of calculation. Finally, the voltage diagram allows to deter-mine the power angle θbetween the e.m.f. produced by the excitation field and the voltage across the terminals. Angle θplays a very important role in the analysis of the torque and power developed by a machine both in the steady-state and transient conditions.4-5I. Choose the answer into the blank according to the text:1. encountered；2. squirrel-cage；3. squirrel.4. force；5. stator；6. bars .II. Translate the following into Chinese:就鼠笼电动机的结构而言其端部是短路的，绕线异步电动机是外部短接。
转子绕组内由旋转气隙磁通感应产生滑差频率电压。
转子电流由感应电压大小和该滑差频率下的阻抗值确定。
启动时，转子静止（n = 0），转差率为S=1，转子频f。
转子电流产生的磁场和定子电流产生的速度相同，启动转率等于定子频率e矩产生，拖动转子沿着定子感应磁场的方向移动。
如果这个力矩足够克服转轴负载力矩，电动机将达到额定转速。
但是其运行速度永远不能等于同步速度，因为转子导体将相对定子磁场静止，没有电流感应产生，也就没有力矩产生。
Ⅲ. Translate the following into English:Motor operation, this condition, as was indicated previously, is the main operating condition of an induction machine. When the machine operates as motor energy is transmitted through the magnetic field from the primary side to the secondary as in a transformer. Therefore, the vector diagram of an induction machine during motor operation is quite similar to the vector diagram of a transformer.4-6I. Choose the answer into the blank according to the text:1. disadvantages;2. synchronous;3. maintenance;4. slip;5. difference;6. transformer.II. Translate the following into Chinese:An induction motor can be basically described as a rotating transformer. Its input is a three-phase system of voltages and currents. For an ordinary transformer, the output is electric power from the secondary windings. The secondary windings in an induction motor (the rotor) are shorted out, so no electrical output exists from normal induction motors. Instead, the output is mechanical. The relationship between the input electric power and the output mechanical power of this motor is shown in the power-flow diagram in Figure 4.28.感应电动机能被基本描述为旋转变压器。