专业英语复习题

2015物联网专业英语复习题

一。Words and Technical Terms

Please translate the Chinese into English.

直流电并联电路离散时间系统模数转换器数字串行方式交流电串联电路连续时间系统数模转换器片上系统超外差式结构自动增益控制矩阵电路Quadrate modulation 正交调制central processing unit（CPU）中央处理器

color graphic adapter（CGA）彩色图形适配器common emitter amplifier 共发射机放大器transmission control protocol （TCP）传输控制协议truth table 真值表

very high frequency 甚高频very large scale integrated circuit（VLSI）超大规模集成电路volt-ohm millimeter（VOM）万用表

Please spell the complete form of the following abbreviate letters.

DSP GPP CPI IIR DAC PLD IC DRAM CPU TCP VLSI CGA ATM Integrated Circuit（IC）Dynamic Random Access Memory（DRAM）Alternating Current（AC）Direct Current（DC）digital signal processing (DSP) register transfer level (RTL)

general purpose microprocessor (GPP) cycles per instruction (CPI)

MOS

二．

（1）There are 10 descriptions and 12 choices marked A to L. You should decide on the best choice according to corresponding description and mark the corresponding letter in the blank.

1. An acceptable range how close by percentage the resistor is to its standard value.

2. An electrical component that limits or regulates the flow of electrical current in an

electronic circuit.

3. With a function that can be established or changed by means of a program

4. The quality or character of sound

5. The process of reading the value of a signal at evenly spaced points in time.

6. An increase in signal power, voltage or current by an amplifier, expressed as the ratio of

output to input.

7. A designated limit or point of termination

8. Electromotive force expressed in volts.

9. Movement of electrically charged particles.

10. The number of repetitions per unit time of a complete waveform.

A. current

B. resistor

C. frequency

D. cutoff

E. gain

F. sampling

G. tone H. voltage I. tolerance J. resistance K. electron L. programmable

（2）Please write vocabulary according to corresponding description.

1. Something such as sound, image, or message transmitted or received in telegraphy, telephony, radio, television, or radar.

2. Not dependent on other variables.

3. Uninterrupted in time, sequence, substance, or extent.

4. Defined for a finite set of value; not continuous.

5. An ordered set of quantities.

6. Having or appearing to have only one color.

7. To arrange in tabular form.

8. Of or relating to sound, the sense of hearing, or the science of sound.

9. The act of clarifying or explaining.

三．Sentences

Directions: There are 10 sentences in this part. Please translate them into Chinese and write the Chinese in the blank.

1. The fact that under certain conditions a continuous-time signal can be completely recovered from a sequence of its samples provides a mechanism for representing a continuous-time signal by a discrete-time signal.

2. Given these samples, we can reconstruct x(t) by generating a periodic impulse train in which successive impulses have amplitudes that are successive sample values. This impulse train is then processed through an ideal lowpass filter with gain T and cutoff frequency greater than wm and less than ωs -ωm. The resulting output signal will exactly equal x(t).

3. If a capacitor is connected to a battery, the electrons will flow out of the negative terminal of the battery and accumulate on the capacitor plate connected to that side. At the same time, the electrons will leave the plate connected to the positive terminal and flow into the battery to make the potential difference just the same as that of the battery. Thus the capacitor is said to be charged.

4. X(jω) is commonly referred to as the frequency-domain representation or the spectrum of the signal, as it provides us with the information needed for describing x(t) as a linear combination (specifically, an integral) of sinusoidal signals at different frequencies.

5. It is common to say that we take the Fourier transform of x(t), meaning that we determine X(j ω) so that we can use the frequency-domain representation of the signal.

6. For convenience, we will generally refer to the independent variable as time, although it may not in fact represent time in specific application.

7. In this way, ARM provides Partners with a full portfolio of offerings that deliver significant risk reduction and faster time-to-market benefits.

8. As its name implies, it is assumed that there must be some form of preprocessing if the signals are in the continuous time domain, and this is easily accomplished by an analog to digital converter (ADC).

9. One might also argue that modern GPPs have clock speeds and cycles per instruction (CPI) that outperform DSP processors but GPPs have operations and program flexibility that are unnecessary for DSP.

10. Their main disadvantage is that they are slow because for a word-length of W-bits the bit-serial architectures will require W clock cycles to compare one word or sample.

11.Signals encountered in practice are mostly continuous-time signals and can be denoted as x(t), where t is a continuum.

12 .The digit-serial formats offer a solution to the interconnection problem in large word-width systems, especially in distributed data flow systems, where the wiring area is usually very large.

四．

1.Directions: Please translate the following passage into Chinese. Write your Chinese version

in the blank behind the passage.

（1）On October 17, 2007, Carr took the idea a step further in a posting on his Rough Type blog. He called out two hot technology companies, Google and Apple, and said they were on the verge of a partnership in which Apple would make an inexpensive piece of hardware users could carry around. This would leverage the computing power of the vast data centers Google has been building to hold the applications and the data for millions of users.

The idea of cloud computing certainly isn't new. Oracle's Larry Ellison launched the New Internet Computer (NIC) company in 2000 to lead the industry forward to that goal. The concept is very simple: On your desk, you would have a very low-cost computer with just a processor, a keyboard and a monitor. There would be no hard drive or CD/DVD drive. It would be hooked up to the Internet and would link to a central supercomputer, which would host all of your programs and files. The idea, however, was ahead of its time. The NIC sold very poorly, probably due to a dearth of broadband availability in the United States. The company folded in 2003.

But by 2006, nearly 75 percent of Americans had broadband access at home. Could a Google/Apple team make cloud computing a widespread phenomenon? And if they move forward, what's in it for Google and Apple? The biggest question of all: If they build the cloud computer, will anyone use it?

Chinese version:

(2)

Resistors can be fabricated in a variety of ways. The most common type in electronic devices and systems is the carbon-composition resistor. Fine granulated carbon (graphite) is mixed with clay and hardened[4]. The resistance depends on the proportion of carbon to clay; the higher this ratio, the lower the resistance.

Another type of resistor is made from winding Nichrome or similar wire on an insulating form. This component, called a wirewound resistor, is able to handle higher currents than a carbon-composition resistor of the same physical size. However, because the wire is wound into a coil, the component acts as an inductors as well as exhibiting resistance. This does not affect performance in DC circuits, but can have an adverse effect in AC circuits because inductance renders the device sensitive to changes in frequency.

The amount of resistance offered by a resistor is determined by its physical construction. A carbon composition resistor has resistive carbon packed into a ceramic cylinder, while a carbon film resistor consists of a similar ceramic tube, but has conductive carbon film wrapped around the outside. Metal film or metal oxide resistors are made much the same way, but with metal instead of carbon. A wirewound resistor, made with metal wire wrapped around clay, plastic, or fiberglass tubing, offers resistance at higher power levels. For applications that must withstand high temperatures, materials such as cermets, a ceramic-metal composite, or tantalum, a rare

metal, are used to build a resistor that can endure heat.

2.Directions: Please translate the Chinese into English. Write your English version in the blank

behind the passage.

半导体的电气性质介于导体和绝缘体之间，像锗和硅这样的元素以及氧化铜和硫化镉这样一些化合物，都属于这种类型，其名称正是来源于此。例如，在普通的室温情况下，1cm3的纯铜对电流形成的电阻约为0.0000017Ω。1cm3 的岩石具有的电阻约为100000000Ω。1cm3的锗具有的电阻约为60Ω。

正如所学过的那样，我们讨论的原子是包含着质子和中子的原子核。原子是被位于一个或多个在同心壳体轨道上电子旋转的一种结构。质子的正电荷被电子的负电荷中和。在中性原子中，轨道上的电子与原子核中的质子数量是相同的。

会计专业英语模拟试题及答案

《会计专业英语》模拟试题及答案一、单选题（每题1分，共20分） 1. Which of the following statements about accounting concepts or assumptions are correct? 1）The money measurement assumption is that items in accounts are initially measured at their historical cost. 2）In order to achieve comparability it may sometimes be necessary to override the prudence concept. 3）To facilitate comparisons between different entities it is helpful if accounting policies and changes in them are disclosed. 4）To comply with the law, the legal form of a transaction must always be reflected in financial statements. A 1 and 3 B 1 and 4 C 3 only D 2 and 3 Johnny had receivables of $5 500 at the start of 2010. During the year to 31 Dec 2010 he makes credit sales of $55 000 and receives cash of $46 500 from credit customers. What is the balance on the accounts receivables at 31 Dec 2010? $8 500 Dr $8 500 Cr $14 000 Dr $14 000 Cr Should dividends paid appear on the face of a company’s cash flow statement? Yes No Not sure Either Which of the following inventory valuation methods is likely to lead to the highest figure for closing inventory at a time when prices are dropping? Weighted Average cost First in first out (FIFO) Last in first out (LIFO) Unit cost 5. Which of following items may appear as non-current assets in a company’s the statement of financial position? (1) plant, equipment, and property (2) company car (3) €4000 cash (4) €1000 cheque A. (1), (3) B. (1), (2) C. (2), (3)

通信英语复习资料(答案)

答案（新）1：词义选择 1—5 CBACB 6—10 DBACB 11—15 ACDAB 16—20 DBDBD 21—25 ACDCD 26—30 BBCBA 31—35 BCBAB 36—40 CBBAB 41—45 CDBB C 46—50 CADBB 51—55 ADABB 56—60 CBCBA 61—65 BACDB 66—70 ACDBC 71—75 CBBCC 76—80 BCBCA 81—85 BCBCB 86—90 ACCDC 91—95 DBCDD 96—100 DCAAB 101—105 ABDAD 106—110 BDCAC 111—115 BDDBC 116—120 CABDC 2：词汇填空 1. combat 2. electromagnetic 3. Frequency 4. Infrared 5. operations 6. target 7. situational 8. electronic 9. Radio 10. Intelligence 11. friendly 12. operational 13. ground 14. Asynchronous 15. electronic 16. Technology 17. defense 18. voice

19. defense 20. electronic 21. Tactical 22. Passive 23. Warning 24. Defense 25. Tactical 26. Treaty 27. battlefield 28. Infrared 29. Positioning 30. electronic 31. Frequency 32. Subsystem 33. data 34. Access 35. space warfare 36. Satellite 37. Active 38. battle 39. Intelligence 40. Theater 41. Attack 42. Network 43. attack 44. Global 45. Frequency 46. microwaves 47. directed 48. wire 49. forces 50. security 3：短语翻译 1. communications capacity 2. voice channel

会计专业英语期末试题 )

期期末测试题 Ⅰ、Translate The Following Terms Into Chinese 、 1、entity concept 主题概念 2、depreciation折旧 3、double entry system 4、inventories 5、stable monetary unit 6、opening balance 7、current asset 8、financial report 9、prepaid expense 10、internal control 11、cash flow statement 12、cash basis 13、tangible fixed asset 14、managerial accounting 15、current liability 16、internal control 17、sales return and allowance 18、financial position 19、balance sheet 20、direct write-off method Ⅱ、Translate The Following Sentences Into Chinese 、 1、Accounting is often described as an information system、It is the system that measures business activities, processes into reports and communicates these findings to decision makers、 2、The primary users of financial information are investors and creditors、Secondary users include the public, government regulatory agencies, employees, customers, suppliers, industry groups, labor unions, other companies, and academic researchers、 3、There are two sources of assets、One is liabilities and the other is owner’s equity、Liabilities are obligations of an entity arising from past transactions or events, the settlement of which may result in the transfer or use of assets or services in the future、资产有两个来源，一个就是负债，另一个就是所有者权益。负债就是由过去得交易或事件产生得实体得义务，其结算可能导致未来资产或服务得转让或使用。 4、Accounting elements are basic classification of accounting practices、They are essential units to present the financial position and operating result of an entity、In China, we have six groups of accounting elements、They are assets, liabilities, owner’s equity, revenue, expense and profit (income)、会计要素就是会计实践得基础分类。它们就是保护财务状况与实体经营

英国文学期末考试题目(英语专业必备)

一．中古英语时期 ?Beowulf is the oldest poem in the English language, and the most important specimen (范例、典范)of Anglo-Saxon literature, and also the oldest surviving epic in the English language. ?The romance is a popular literary form in the medieval period（中世纪）. It uses verse or prose to sing knightly adventures or other heroic deeds. ?Geoffrey Chaucer, one of the greatest English poets, whose masterpiece, The Canterbury Tales（《坎特伯雷故事集》）,was one of the most important influences on the development of English literature. ?Chaucer is considered as the father of English poetry and the founder of English realism. 二．文艺复兴Renaissance ?Renaissance refers to the period between the 14th and mid-17th centuries. It marks a transition(过渡) from the medieval to the modern world. ?It started in Italy with the flowering of painting, sculpture（雕塑）and literature, and then spread to the rest of Europe. ?Humanism is the essence of Renaissance -----Man is the measure of all things. ?This was England’s Golden Age in literature. Queen Elizabeth reigned over the country in this period. The real mainstream of the English Renaissance is the Elizabethan drama. The most famous dramatists in the Renaissance England ? ?“Of Studies” is the most popular of Bacon’s 58 essays. ?Thomas More ——Utopia ?Edmund Spenser——The Faerie Queene 相关练习 ? 1. Which is the oldest poem in the English language? ? A. Utopia B. Faerie Queene ? C. Beowulf D. Hamlet ? 2. _____ is the father of English poetry. ? A. Edmund Spenser B. William Shakespeare ? C. Francis Bacon D. Geoffrey Chaucer ? 3. ____ is not a playwright during the Renaissance period on England. ? A. William Shakespeare B. Geoffrey Chaucer ? C. Christopher Marlowe D. Ben Johnson 三．莎士比亚William Shakespeare ?“All the world 's a stage, and all the men and women merely players.”——William Shakespeare ?William Shakespeare is considered the greatest playwright in the world and the finest poet who has written in the English language. Shakespeare understood people more than any other writers. He could create characters that have

专业英语试题及答案私有

广东纺织职业技术学院2010～2011学年第一学期《专业英语》期中考试参考答案一、单词翻译（英译汉） titrimetric 滴定的analysis 分析 reagent 试剂titrant 滴定剂 flask 烧瓶oxidation 氧化 precision 精密度standard solution 标准溶液sodium hydroxide 氢氧化钠Equilibrium constant 平衡常数equilibrium. 平衡manifest 出现，表明equilibrium concentration 平衡浓度frictional flow 有摩擦的流动ionization constant 电离常数correct for 做……的修正molarity 物质的量浓度compressed gas 压缩气体neutralization 中和device 装置，设备plus 正的，加的elevation 海拔，地理高度neutral 中性的positive-displacement 正位移 meter 米，公尺，计，表，仪表 reciprocating 往复的，来回的sodium hydroxide 氢氧化钠piston 活塞 external 外部的(常与to 搭配) centrifugal pump 离心泵，离心抽机 in the absence of 缺乏……时，当……不在时 rotational 转动的，轮流的 at the expense of 归……付费，在损害……的情况下 rotational velocity 旋转速度 compensation 补偿，赔偿stream 溪，川，流，一股，一串，河流 specific 特定的upstream station 上游截面 streamline .流线downstream station 下游截面二、单词翻译（汉译英） normal to surface 垂直于传热面discharge 滤饼卸料 correspondence 符合，一致ceramic 陶器的 momentum 动量，动力，要素filtrate 滤液 momentum transfer 动量传递opening 孔 random motion 随机运动，无规则运动 colloidal particle 胶体微粒 diffused 扩散的configuration 构造，配置 adjacent .邻近的，接近的fluctuation . 波动，起伏 vibrating 振动的，振荡的atm(atmosphere) 大气压(1atm＝ 101. 3 kPa) bulk temperature (远离表面的)流vane (风车、螺旋桨等

通信专业英语复习

南京工程学院通信工程学院专业英语复习 P40 Signal Processing Signals commonly need to be processed in a variety of ways. For example,the output signal from a transducer may well be contaminated with unwanted electrical “noise”. The electrodes attached to a patient’s chest when an ECG is taken measure tiny electrical voltage changes due to the activity fo the heart and other muscles. The signal is often strongly affected by “mains pickup”due to electrical interference from the mains supply. Processing the signal using a filter circuit can remove or at least reduce the unwanted part of the part of the signal. Increasing nowadays, the filtering of signals to improve signal quality or to extract important information is done by DSP techniques rather than by analog electronics. 信号通常需要有各种不同的方式处理。例如，来自变压器的输出信号，很可能会受到有害电气“噪声”的污染。当测量由于心脏和其他肌肉活动引起的微小电压变化的心电图时，需要把电极贴在病人的胸部。信号会受到来自电源供应电磁干扰的主检波器的强烈影响，信号处理电路可以使用过滤器消除或减少信号的多余部分。如今越来越多的，信号的滤波以提高信号质量或提取重要信息是由DSP技术而不是模拟电子产品来完成的。 P44 Image Processing Image are signals with special characteristics. First,they are a measure of a parameter over time. Second,they contain a great deal of information.For example,more than 10 megabytes can be required to store one second of television video. This is more than a thousand times greater than for a similar length voice signal. Third,the final judge of quality is often a subjective human evaluation,rather than an objective criterion. These special characteristics have image processing a distinct subgroup within DSP. 图像信号具有特殊特征。首先，他们是在空间（距离）上衡量的一个参数，大多数的信号衡量参数受时间的控制。第二，它们含有大量的信息。例如：超过10兆会被需要存储一秒的电视录像。这超过了一千倍的相似长度的语音信号。第三，质量的最终裁判是人的主观评价，而不是客观评价。这些特点使图像处理成为一个具有DSP芯片的截然不同的子群。

《财会专业英语》期末试卷及答案

《财会专业英语》期终试卷 I.Put the following into corresponding groups. (15 points) 1.Cash on hand 2.Notes receivable 3.Advances to suppliers 4. Other receivables 5.Short-term loans 6.Intangible assets 7.Cost of production 8.Current year profit 9. Capital reserve 10.Long-term loans 11.Other payables 12. Con-operating expenses 13.Financial expenses 14.Cost of sale 15. Accrued payroll II.Please find the best answers to the following questions. (25 Points) 1. Aftin Co. performs services on account when Aftin collects the account receivable A.assets increase B.assets do not change C.owner’s equity d ecreases D.liabilities decrease 2. A balance sheet report . A. the assets, liabilities, and owner’s equity on a particular date B. the change in the owner’s capital during the period C. the cash receipt and cash payment during the period D. the difference between revenues and expenses during the period 3. The following information about the assets and liabilities at the end of 20 x 1 and 20 x 2 is given below: 20 x 1 20 x 2 Assets $ 75,000 $ 90,000 Liabilities 36,000 45,000 how much the owner’sequity at the end of 20 x 2 ? A.$ 4,500 B.$ 6,000 C.$ 45,000 D.$ 43,000

专业英语期末试卷

ACCOUNTING ENGLISH Middle-of-term Test Papers PartⅠ.Translating the following terms 1、Notes to financial statements 2、Accounting elements 3、Variable costs 4、Economic entity 5、Depreciation expense 6、Deferred income taxes 7、Nominal accounts 8、ROA 9、LIFO 10、Work in process 11、现金收支 12、原材料 13、制造费用 14、相关性 15、持续经营 16、复式记账 17、优先股 18、预付费用 19、购货退回与折让 20、永续盘存制

PartⅡ.True or False 1、 The accounting process generates financial reports for both “internal ”and “external”users. 2、The balance sheet reflects the basic accounting equation and the means of financing the organization's assets. 3、The existence of Accounts Receivable on the Balance Sheet indicates that the company has one or more creditors. 4、Liabilities are classified and presented in increasing order of liquidity. 5、Working capital equals current assets less current liabilities. 6、Declaration of dividends reduces the retained earnings portion of the owners' equity of the corporation and creates a liabilities called Dividends Payable. 7、A chart of accounts is a listing of the titles of all accounts. 8、The cash basis of accounting often violates the matching rule. 9、Closing entries convert real and nominal accounts to zero balance. 10、The work sheet is published with the balance sheet and income statement, as a supplementary statement. 11、A company's sustainable growth rate is the highest growth rate in sales it can attain without issuing new stock. 12、Only rapidly growing firms have growth management problems.

09通信工程专业英语试卷A及全部答案

琼州学院 09通信工程专业《专业英语》试卷 2011 ——2012学年度第 1 学期期末考试（ C ）卷答案注意事项： 1、考前请将密封线内填写清楚 2、所有答案请直接答在试卷上（或答题纸上） 3、考试形式：（闭）卷 4、本试卷共大题，满分100分。考试时间120分钟 5 一、科技常用词组翻译（本题共20 小题，每小题 1.5 分，共 30 分） 1、英翻中 (1)client 客户机 (2)router 路由器 (3)hub 集线器 (4)destination address 目的地址 (5)datagram 数据报 (6)amplify 放大 (7)medium 媒介 (8)information 信息 (9)transmission 传输 (10)multimedia 多媒体 2、中翻英 (1)超链接 hyperlink (2)交易 transation (3)电子商务 E-commerce (4)适配器 adapter (5)调制解调器 modem (6)中国电信 China Telecom (7)数字业务 digital service (8)虚拟现实 virtual reality (9)分组交换网 packet-switching network (10)子网 subnetwork 二、英、中词组正确搭配（每组 1 分，共 10 分）班级姓名学号密封装订线

1.Bearer channel 数据信道5. 2.Terminal Adapter 处理信号4. 3.analog system 用户设备6. 4.handle signaling 载波信道1. 5.data channel 模拟系统3. 6.customer equipment 终端适配器2. 7.service type 端到端数字连接10. 8.Integrated Services Digital Network 数字交换系统 9. 9.digital switching system 综合业务数字网8. 10.end-to-end digital connectivity 业务类型7. 三、把下面句子翻译成中文（本题共 5 小题，每题 4 分，共 20 分） 1、Data is a collection of un_organized facts. 数据是无组织的事实的集合. https://www.360docs.net/doc/b815671404.html,rmation is data that is organized ,has meaning,and is useful. 信息是有组织的,有意义的和有用的数据. 3.The system unit is a box-like case made of metal or plastic. 系统单元是金属或塑料制成的象盒般的箱子. 4.Storage hold data,instruction,and information for future use. 存储器保存数据,指令和信息以便将来使用. 5.Modems are available as both external and internal devices. 调制解调器可作为内部或外部的设备.

汽车工程专业英语》期末试卷

一、选择题 1、The four-stroke cycle operates in which order __C__. A. intake, exhaust, power, compression B. intake, power, compression, exhaust C. intake, compression, power, exhaust 2、With the piston at the bottom of the cylinder, the ___C____ valve ___________ to allow the burned exhaust gas to be expelled to the exhaust system. A.intake, closes B. exhaust, closes C. exhaust, opens 3、A car engine's job is to ___B__ A. Convert fuel into heat B. Convert fuel into motion C. Convert fuel into exhaust 4、When the crankshaft completes four revolutions for a four-cycle engine, each cylinder will have gone through ____B____intake stroke(s). A.one B. two C. Three 5、___C___ is the life-blood of the engine. A. gas B. water C. Oil 6、What is the core of a car's engine___C___ A.The spark plug B. exhaust C. The cylinder 7、What determines the size and the placement of the engine block____C____ A. The number of spark plugs B. The number of pistons C. The number of cylinders 8、In the standard engine, each cylinder has ___A___. A.four valves B. two valves C. one valve 9、A crankshaft's job in an engine is to ___C___ A. Deliver fuel to the cylinders B. Keep cylinder heads in place C. Change linear motion into rotational motion 10、The _____C___ system on an internal combustion engine provides the spark that ignites the combustible air/fuel mixture in the combustion chamber. A.starting B. fuel C. igniting 二、填空题 1.Today’s average car contains more than 15000 separate, individual parts that must work together. These parts can be grouped into four major categories: body，engine，chassis and electrical system . 2.The direction motion of vehicle is controlled by a steering system. A basic steering system has 3 main parts: steering control mechanism ，steering gear and steering linkage mechanism which connecting wheels and steering gear . 3.The location of the driving axle determines whether the vehicle is classified as rear-wheel?drive ，front-wheel?drive ，four-wheel?drive and all-wheel drive. 4.The modern clutch9 is a single plate, dry disc . It consists of five major parts: flywheel, clutch disc , pressure plate assembly, throw-out bearing , and clutch linkage.

专业英语期末考试试卷AB卷标准答案及评分标准

专业英语期末考试试卷A卷标准答案及评分标准（2009-2010第二学期）一、Translate the following speciality vocabulary into Chinese (20×1=20) 标准答案：1.电气工程 2. 正电荷 3 .信道 4.家庭自动化 5.桌面应用软件 6.下降沿 7.波特率 8.红外线传感器9 数字信号10.激光技术 11光纤12.微处理器13振荡器14.半导体15.远程控制 16触发器17.阴极射线管18 代码错误19.波导管20.通信工程评分标准：得分=做对的个数×1 二、Translate the following speciality vocabulary into English(10×1=10) 1.circuit 2.voltage 3.diode 4.triode 5.microwave oven 6.watchdog 7.sensor或transducer 8.current 9.transistor 10. magnifier或amplifier 评分标准：得分=做对的个数×1 四、Multiple choices. (2×10=20） 1-5 BCDBD 6-10 BAAAC 评分标准：得分=做对的个数×2 五、Translate the following sentences into Chinese (5×2=10) 1、电源有两种：电流源与电压源。 2、电子元器件分为有源元件与无源元件两类。 3、激光技术是用来测量物体的存在、传感器到物体之间的距离以及物体尺寸的一种技术。 4、计算机的“大脑”被称为微处理器。 5、串行口有四种工作模式。六、Choose the right statements according to the following passage .（true(T) or false (F) (5×2=10)） P1: 1-5 T F T F T 评分标准：得分=做对的个数×2 七、Reading Comprehension(5×2=10)） 1-5 B C A D C 评分标准：得分=做对的个数×2

专业英语考试试题与答案

1.Why are cast metal sheet ingots hot-rolled first instead of being cold-rolled? Because of cold rolling is to use hot rolled steel coils as the raw material, after acid pickling to remove oxide skin for cold rolling, the finished product is hard roll, because of cold work hardening caused by deformation of continuous cold rolling hard roll strength, increase hardness, toughness and plastic index decreased, so the stamping performance will deteriorate, can only be used for simple deformation of the parts 2.What type of heat treatment is given to the rolled metal sheet after hot and “warm” rolling? What is its purpose? 轧钢的热处理的类型？轧钢热处理的目的？ Heat treatment of the main types are annealing, normalizing, quenching and tempering, solution treatment and aging treatment, cold treatment, chemical treatment, etc. Annealing： The steel is heated to a certain temperature and heat preservation for a period of time, and then make it slowly cooling, called annealing. Steel annealing is a heat the steel to the phase change or part of the phase change temperature, slow cooling after heat preservation heat treatment method. The purpose of annealing is to eliminate tissue defects, improve the organization make composition uniformity and fine grains, increase mechanical properties of the steel, reduce residual stress; Can decrease the hardness at the same time, improve the plasticity and toughness, improve machinability. So before annealing in order to eliminate and improve both the legacy of tissue defects and internal stress, and to prepare for the follow-up process, so the annealing is belong to the intermediate heat treatment, also called heat treatment in advance Normalizing： Normalizing is heated to above the critical temperature of steel, to all into homogeneous austenitic steel, heat treatment and natural cooling in air. It can eliminate hypereutectoid steel mesh cementite, for hyposteel normalizing can refine crystal lattice, improve comprehensive mechanical properties, low requirements for the parts use the normalized instead of the annealing process is more economic. Quenching: Quenching is the steel is heated to above the critical temperature, heat preservation for a period of time, then quickly into the quenching medium, the temperature plummeted, rapid cooling at greater than the critical cooling rate of speed, which is mainly composed of martensite and unbalanced heat treatment method of the organization. Can increase strength and hardness of the steel quenching, but to reduce its plasticity. That is commonly used in quenching hardening agent are: water, oil, caustic soda, and salt solution, etc