专业英语作业定

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第一学期英文专业作业

第一学期英语作业U 11）Youmg as she is. Mary is very good at handling diffcult customers.2）After explaining his plan in great detail,Bob Suimmarized its main points in a few sentences 3)The newly-elected govermment has begun the painful process of working out its policies and strategies4）At first,Tom found it difficult to absorb what his teachers said in class.5) You will be are boyund to fail the exam if you don't do any rowiston(复习）6) Please feel free to call on us whenever you like,7)There are jobs more dangerous than truck driving,forinstance,training lions. (8)the marketing department is working on new strategies to improve the company's share of the market9)Many of the students Complained that the exam was too hard.,10)After reading the text three times,the clever boy has committed it to memory11)The doctor insisted that everything would be alright.Nevertheless I canmot help feeling anxious about the safety of the child12)Nowadays we rely more and more on computers to help us in doing everything13)Apart form being fun and good exercise,swimming is a very useful skill.14)Afer spending a year in Australia, the little girl has gained quite a good Command of spoken English3. Complete the following sentences,using the words in brackets(括号）：1)I have warmed you over and over again to keep away from drugs.(over)2)If you try to leam toomany things at atime,you may getsonfused.(time)3）We won't know ifthe plan will work untilwe put it intoprctice(practice)4)You can't learmEnglish well withoutwatching out for diomaticways of saying things.5）Peter has tried manythings with no particularsuccess,but he is bu nomeans an incapableperson (means)6)Can you turn themusic down,please?Ican't concentrate on mywork.(concentrate)7)In adlition toteaching at theuniversity,ProfessorWilson also works as alegal adviser（法律顾问）to a high-techcompany.(addition)8)If you come to myoffice,I'l tell you the storyin latai l (detail)我坚信，阅读简写的英文小说是扩大我们词汇量的一种轻松愉快的方法。

电气工程及其自动化专业英语作业

专业英语作业（C2S3—P40）alog-DigitalConversionAnMany quantities have continuous values, including temperature, pressure,许多变量都有连续的量值，如温度，压力，displacement, rotation, voltage, current, and intensity of light and sound.位移，旋转角，电压，电流以及光和声音的强度。

The task of quantizing the continuous values into a binary scale is called analog-to-digital conversion (ADC).将连续量化为二进制数字的工作称为模数转换（ADC）Digital-to-analog conversion (DAC) is the inverse process,in which data in discrete values, are converted or restored to a continuously variable form.数模转换是一个相反的过程，它将离散的数据转化或恢复为一个连续可变的形式。

The transducer is the name of the device that produces a voltage or a current proportional to the physical phenomenon to which it responds.传感器是一种装置，它能产生与所反映的实际现象成比例的电压或者电流Analog-to-digital conversion模数转换Only two basic techniques exist for analog-to-digital conversion (ADC).ADC有两种基本方法One is to compare the analog voltage amplitude to a binary voltage scale in which the match yield the binary number that corresponds to the amplitude.一种方法是将模拟电压幅值和二进制电压作比较，在此比较过程中产生与幅值相对应的二进制数。

专业英语作业

1、A VPN is physically public but virtually private2、Set is a secure protocol jointly designed by Mastercard and Visa with the backing of Microsoft, Netscape, IBM, GTE, SAIC, and other companies.3、 The physical components of a computer are collectively called hardware4、The term payment card refers to Credit card 、Charge card5、The fifth generation computers, with artificial intelligence,are being developed and perfected now.6、In the future, we may eliminate the needs for physical money.Indeed ,we would exchange digital cash For goods and services.7、The basic input device on a small computer is a keyboard8、You must have seen her in her office last Friday; she's been out of town for two weeks.9、The ability to store knowledge makes computers different from every other machine ever invented.10、The fifth generation computers, with artificial intelligence,are being developed and perfected now.11、DigiCash or E-cash is an electronic payment system developed by Dr.David Chaum, who is widely regarded as an inventor of digital cash.12、Transaction changed to your telephone bill are called E-charge payments13、Smart cards are cards that look like credit cards, but store information on a microprocessor chip instead of magnetic strips.14、 is a free service that earns a profit on the transaction cost, which is money that is deposited in PayPal accounts15、This ticket entitles you to a free meal in our new restaurant16、Program that can destroy another computer’s programs are called viruses17、Data and program instructions are stored in storage18、Electronic wallets that store digital certificates are particularyly handy when you shop at a site that requests user authentication information.19、The percentage of times an ad is clicked on based on the number of times it’s viewed is called CTR20、The purpose of input device is to enter commands .、to input data2. Please translate the following into English.计算机不止桌面电脑和笔记本电脑。

计算机专业英语作业

计算机专业英语作业：1、请将视频“什么是电脑硬件”中所述内容用英文表示。

2、请将以下英文翻译为中文。

1）Plug and Play, sometimes, abbreviated(简略的、缩写) PnP, is a catchy(动人的、易记住的) phrase( [freiz] 短语、习语) used to describe devices(设备、装备) that work with a computer system as soon as（与……一样）they are connected(链接的、有关系的). The user does not have to manually(手动的、用手) install drivers(驱动) for the device(装置、策略) or even tell the computer that a new device has been added. Instead the computer automatically(自动的、机械的) recognizes the device, loads new drivers for the hardware if needed, and begins to work with the newly connected device(链接设备)，即插即用，缩写为PnP，这是一个容易记住的短语，它用来描述与计算机操作系统连接工作有关的设备。

用户不需要为设备手动安装驱动，甚至于不需要告诉计算机已经添加了饿一个新的设备。

计算机自动识别设备，如果需要为硬件加载一个新的驱动，并且开始工作在新的连接设备上。

For example, if you connect a Plug-and-Play mouse to the USB port on your computer, it will begin to work within a few seconds of being plugged(拥塞的、接通电源) in. A non plug-and-play device would require you to go through several steps of installing drivers and setting up the device before it would work.例如，如果你在你的电脑上的USB接口连接了一个即插即用的鼠标，它开始工作时接通电源只需要几秒钟。

专业英语作业

3.2Mandibulates:Crustaceans
The crustaceans（subphylum Crustacea,with a single class)are a large, diverse group of primarily aquatic organisms, including some 35000 species of crabs, shrimps, lobsters, crayfish, barancles, water fleas, pillbugs,and related groups. Often incredibly abundant in marine and freshwater habitats and playing a role of critical importance in virtually all aquatic ecosystems,crustaceans have been called “the insects of the water”.
scorpions are probably the most ancient group of terrestrial arthropods. They are known from as early as the silurian period,some 425 million years ago. There are about 35,000 named species of spiders ( order Araneae ). The order Acarai, the mites,is the largest in terms of number of species and the most diverse of the arachnids.

专业英语作业习题

由张学炳整理，仅供参考，如有问题还请见谅电路作业(英译汉)：1、passive/ active network 无源/有源网络2、the rate of change with time of the current 电流随时间的变化率3、passive circuit elements无源电路元件4、proportionality constant 比例常数5、voltage /current source电压/电流源6、voltage drop/rise电压降/升7、loop analysis/current回路分析法/回路电流8、Note that conventional current flow is used;hence the currentin each element is shown in the direction of decreasing voltage.注意：电流的参考方向为惯用的参考方向，因此流过每一个元件的电流与电压降的方向一致9、In their ideal form,voltage sources generate a constant voltage independent of the current drawn from the source. The aforemetioned battery and generator are regarded as voltage sources since their voltage is essentially constant with load .这理想状态为电压源两端的电压恒定，与从电压中流出的电流无关。

因此负载发生变化时电压基本恒定，因此上述电池和发电机被认为电压源三相电路作业(英译汉)：1、armature coil 电枢线圈2、three-wire or four-wire three-phase system三线或四线三相系统3、wye-connection /delta-connectionY形联结/△形联结4、phase/line voltage 相/线电压5、phase sequence 相序6、phasor diagram相量图7、positive half-cycle 正半周期8、Three-phase machinery and control equipment are smaller ,lighter in weight,and more efficient than single-phase equipment of the same rated capacity.in addition to the above-mentioned advantages offered by a three-phase system, the distribution of three-phase power requires only three-fourths as much line copper as dose the single-phase distribution of the same amount of power .三相供电的机械和控制设备与相同额定容量的单相供电设备相比：体积小、重量轻、效率高，除了三项系统提供的上述优点，三相电的传输需要的铜线仅仅是同样功率大小单相电传输所需铜线的3/49、A three-phase electric circuit is energized by three alternating emfs of the same frequency and differing in time phase by 120 electrical degrees.三相电路可由三个频率相同在时间在相位相差120°电度角的电动势供电计算机的结构与功能翻译作业：1、internal architecture of a computer计算机内部体系结构2、instruction execution cycle指令执行周期3、binary-coded instruction二进制编码指令4、memory存储器5、central processing unit(CPU)中央处理(单元)器6、external processor bus外部处理器总线7、input/output system输入/输出系统8、word length字长9、program branches程序分支10、machine-language instruction机器语言指令11、operation code操作码12、operand address操作地址13、immediate operands立即操作数14、Branch address转移地址15、addressing range of the microprocessor微处理器的寻址范围16、variable instruction fields可变的指令域(变指令段)17、multiword instructions多字指令18、memory space存储空间19、data types数据类型20、binary-coded decimal digit二进制编码十进制数21、single-precision floating-point data types(32bits)单精度浮点数据类型22、double-precision floating-point data types(64bits)双精度浮点数据类型23、computer terminal key计算机终端键24、American Standard Code for Information Interchange (ASCII)美国信息交换标准码25、digital control system数字控制系统26、primary memory主内存27、random-access memory(RAM)随机访问存储器28、read-only memory(ROM)只读存储器29、programmable read-only memory(PROM)可编程只读存储器30、erasable programmable read-only memory(EPROM)可擦可编程只读存储器31、electronically erasable PROM is abbreviated EEPROM电子可擦除PROM（可擦可编程只读存储器）缩写为EEPROM32、arithmetic and logical unit(ALU)逻辑运算单元33、registers寄存器34、internal processor bus内部处理器总线35、Instruction register指令寄存器36、programmer’s model of the CPU CPU程序员模型37、instruction set指令集38、Flag register标志寄存器39、status register状态寄存器40、condition register条件寄存器41、program counter(instruction pointer)程序计数器42、register addressing寄存器寻址43、register indirect addressing寄存器间接寻址44、control lines控制线45、”read” command读指令46、data bus 数据总线47、address bus地址总线48、instruction processing sequence指令处理顺序49、reset request复位请求50、unrecoverable error不可恢复错误51、interrupt request中断请求52、service subroutine服务子程序53、bus request总线请求54、terminal interface终端接口55、carriage return回车56、data source device数据源设备57、data destination数据目的地58、bus buffers总线缓冲59、microprocessor integrated circuit位处理器集成电路60、I/O-mapped input/outputI/O映射的输入/输出61、I/O port I/O端口62、memory-mapped I/O存储器映射的输入/输出63、The CPU reads and interprets the instructions, reads the data required by each instruction, executes the action required by the instruction, and stores the results back in memory.CPU读取并解释指令，读取每一条指令所需的数据，执行指令所需的动作并将结果存储回内存64、The “number” of a location is called its address.单元的编号为地址65、To carry out a fetch, the processor places(enables)the binary-coded address of the desired location onto the address lines of the external processor bus.为了完成这次读取，处理器把所需单元的二进制码地址放到外部处理器地址总线的地址线上66、The ALU provides a wide arithmetic operations, including add, subtract, multiply, and divide. ALU提供很广泛的算数操作，包括加、减、乘和除67、Decoding means that the operation code is examined.译码意味着检查操作代码68、A bus is a set of closely grouped electric conductors that transfers data, address, and control information between functional blocks the CPU.总线是一套分组的电导线，它能在CPU的功能模块间传递数据、地址和控制信息69、A total program cycle comprises many instruction cycles, each instruction cycle can be divided up into its component machine cycles, and each machine cycle comprises a number of clock cycles.一个总程序周期是由许多指令周期组成，每个指令周期分为它部件的机器周期，每个机器周期由许多时钟周期组成A Industrial Robot翻译作业：1、single-purpose machines 单一用途（专用）的机器2、the RotbotIstitute of America 美国机器人研究所3、the U.S. Atomic Energy Commission 美国原子能委员会4、Numerical control（NC）technology 数字控制技术5、Remote manipulation techonolgy远程控制技术6、The term “reprogrammable”implies two things:the robot operates according to a written program,and this program can be rewritten to accommodate a variety of manufacturing tasks.“可编程”一词意味着两件事：机器人操作根据写好的程序作业，这个程序可以被重写以适应各种生产任务7、The “multifuctional”means that the robot can,through reprogramming and the use of different end-effectors perform a number of different manufacturing tasks.“多功能”意味着机器人可以通过重新编程和使用不同的末端执行器执行许多不同的生产任务8、Numerical control technology provide a form of machine control ideally suited to robots.It allowed for the control of motion by stored programs.数字控制技术提供一种控制机器人的理想选择，它允许通过存储程序控制运动9、Remote manipulation technology allowed a machine to be more than just another NC machine.It allowed such machines to become robots that can perform a variety of manufacturing tasks in both inaccessible and unsafe environment.远程控制技术允许机器不仅仅是一个数控机器，它允许这样的机器成为机器人可以执行各种任务无法接近和不安全的环境。

专业英语作业1

《专业英语》作业global corporation全球公司economic boom 经济繁荣Ownership 所有权joint-venture合资企业headquarters 总部Competitive Advantage 竞争优势Entrepreneur企业家equity股权Insurance costs 保险费用bargaining power 议价能力overhead开销Insurance Company 保险公司stock options股票期权consumer appliance 家电消费Insurance contract 保险合同performance-based pay 基础薪酬policy-holder 投保人Commission 佣金personal effects 个人财物natural calamities 自然灾害Decision 决策insurance amount 保险金额insurance coverage 保险保障Venture Capital 风险资本marine coverage 海险salvage charge 救助费用Food chain 食物链general average 共同海损mass production 大规模生产containerization 集装箱distributor 经销商Chain stores 连锁商店phone interview 电话面试vending machine 自动售货机Selling point 卖点billboard 广告牌cinema commercials 影院广告Promotions 促销leaflet 传单poster 海报Search engine 搜索引擎stock prices股票价格Financial crisis 金融危机intellectual capital 智力资本national asset 国家资产Business Model 商业模式Electronic commerce 电子商务Globalization 全球化1、The multinational is big and rich. It often operates in industries which are difficult to enter and of vital national importance, e.g. the computer, chemical and automobile industries. Most important of all, the main objective of the multinational is to organize its activities around the world so as to maximize global profits and global market shares. Each subsidiary is part of an international network of affiliates. These all interact with each other. Each part serves the whole. The center controlling the network—the multinationals’ headquarters—is not under the control of the host government. It is frequently thousands of miles away from these subsidiaries.跨国公司不仅大而且富有。

专业英语-作业

自动控制系统
控制量末端元件输出响应
Task 5
1.Tanslate the following paragraph into Chinese. • There are several possible ways to classify relays: by functions, by construction, by application. Relays are one of two basic types of construction: electro magnetic or solid state. The electro magnetic type relies on the development of electro magnetic forces on movable members, which provide switching action by physically opening or closing sets of contacts. The solid state variety provides switching action with no physical motion by changing the state of serially connected solid state component from non-conducting to conducting. Electro magnetic relays are older and more widely used; solid state relays are more versatile, potentially more reliable, and fast.
2.Tanslate the following terms into English.

专业英语作业

发展中的磁悬浮列车【The development of the maglev train】专业：交通工程班级：092班姓名：孙忠皓学号：200900520The development of the maglev trainThe face of it seems far, the next train is like a huge sleigh, driving on the elevated line 23 feet above the ground. , It is almost impossible to recognize it when it is moving to the front of a train. Because both inorganic car, wheels, and no rail. The most surprising is that it does not have the clicking sound and ear-piercing screams, there is no rumbling sound. When When it Feishi the past, only a great whir, the sound in the train close to 300 miles per hour to tear air. The new train called the Maglev train, referred to as the maglev train. It does not train the set of features, because it is suspended in the air by a very powerful magnet, magnetic support. It is not rolling on the rail, in fact the driving force behind the use of magnets in flight. Maglev Train in addition to air resistance, free from obstruction of any friction, and thus able to achieve the high speed of vehicles traveling on the ground have never heard of.Maglev transportation system has many advantages. The maglev train is fast, quiet, pollution-free, take up a smooth, comfortable, rail located above the ground transportation. But the maglev transportation there are many problems, both technical aspects, financial aspects, these problems remain to be solved. The maglev development is complicated by a factor which is not actually a technical problem., But two. A design is to use the so-called attract suspension to increased vehicle so as not to contact the track. Protruding from the car at the bottom of electromagnet to attract a ferromagnetic material on the outer edge of the following track to allow the body to levitate. Electronic sensors to control the current size to ensure that the gap between the track and magnet constant - about 1 cm. Another design is the electromagnetic system of exclusion. In system exclusion suspension, the charged coil or the opposite polarity of powerful superconducting magnets in the following guide in the bottom plate of the magnetic field generated by charged metal plates and body, the body suspended by the repulsive force.Each method has its own advantages and disadvantages. Attract the suspension system is unstable. More car magnet close to the track, trying to force them suck together, the greater must be fast, sensitive electronic control components to change the current through the electromagnet, by increasing or reducing the attractiveness to adapt to the body in orbit minor changes on the encounter. Because the gap between the body and the track is very small, so there must be a very smooth track. But let's double the gap increases, you need to quadruple the strength of the suspended magnet, such consequences may cause the body too heavy to be practical, too energy consumption rather than economic.On the other hand, exclusion, suspension system is stable in the vertical plane. Rely on body and orbit closer, trying to force to separate them greater, without the need for sophisticated control components. But it requires the magnetic field is much greater than to attract the suspension system toachieve the following: the superconducting magnets in the relatively small size, relatively light weight, can produce a strong magnetic field, and relative to each passenger to save case of electrical energy to produce large levitation force. The superconducting magnet can not be used to attract the suspension system. Because superconducting conditions, almost no resistance, once the current for the magnetic field, the magnetic field is uncertain, unable to control its quantity, and therefore can not control the gap between the body and the track. But the rejection of the stability of the system does not exist for these conditions. The exclusion of the suspension system and the superconducting magnet of the biggest advantages is the gap between the body and the track is much larger than the magnet attract the clearance of the suspension system.The two systems, the train propulsion is basically similar. In both cases, the trains are effectively floating up in the electromagnetic wave. Transform the current direction of the rail within a group of magnets will change the polarity of the magnet, which also changed the role these magnets and car magnets, the result is that the train was alternately pushing, pulling forward. Improve the current frequency will accelerate the movement of the train. Japan Railway maglev train laboratory chief engineer, said: "Theoretically, we can make it (maglev train) speed of 1000km (620 miles)."发展中的磁悬浮列车远远地迎面看来，未来的火车就像是一个庞大的雪橇，行驶在高出地面23英尺的高架线路上。

专业英语课程大作业要求

专业英语课程大作业要求
要求：大作业必须包括以下（一）、（二）两部分内容，每个部分中可以选择一个题目撰写。

选题范围：
（一）、以下任选一个撰写（评分条件：具体、全面、准确、结合实际）：
1、英文个人简历（表格形式，篇数不少于2页）
内容包括：个人自然情况、学的专业、爱好等特点。

投递对象：外企公司
要求：内容全面，针对性强。

2、英文求职信，根据应聘单位特点写出自己为什么应聘此
工作的原因。

（1000个单词以上）
（二）、以下任选一个完成：
1、请在下面三个方向中选择其一撰写小论文。

要求根据选题方向自立题目，文章重点突出，语句正确、连贯。

字数在2000个单词以上。

(1) internet Search Engines (work methods、categories、
example：goole/baidu/…..)
(2) advertisement on the web(why、how)
(3) virtual community(interview、categories、example:
blog/BBS)。

专业英语作业标准答案

专业英语作业集选择题Part I. Choose the right meaning of the underlined part according to the context.1.…in the developing countries, the availability of cheap labor lured many companiesinto building new factories and assembly plants. A2.At international level, various attempts have been made to regulate the activities of themultinational. C3.SKF immediately started feeding it with export orders and continued until the domesticmarket picked up again. B4.…these foreign giants will take over smaller com panies and gradually dominate animportant industry. C5.The danger of this kind of domination is perfectly exemplified by a controversialtakeover which occurred in France. B6. Sometimes, the flow of funds causes disastrous fluctuations in the exchange rate oftheir currencies. D7. Arguing against multinationals, cities cry in shrill tones that these organizationsengage in anti-competitive activities… A8. Those speaking for the defense see … and bringing much needed resources, expertiseand employment to the host countries. D9. At the same time, the company has sought to pull its shares out of a multiyear slump.B10. Last year, it finally appeared that the $19 billion manufacturer of microchips,microwave ovens and … was making headway. B11. And during Sadao Kondo’s two-year tint as company president, Sanyo Electric trimmedsome $250 million from the company’s overhead by shutting d own unprofitable product lines..A 12. …the company announced that some 180,000 refrigerators had f aulty doors and wouldbe recalled. D13. … however, publicity about two defective products had taken a toll on Sanyo’s imagein the eye of Japan’s quality-conscious consumers….. B14. Sanyo is a good company caught in a tough global environment. D15. ―Kuwano’s technical background is unique for a consumer appliance manufacturer.‖Offers Hitsohi Kuriyama, who covers Sanyo for Merrill Lynch in Tokyo. D16. Sanyo officials are reluctant to make sweeping projections for the business. B17. While its bigger competitors were building brand image with high-visibility products,Sanyo failed to develop that killer product or technology. A18. We believe the new plant will add $150 million to Sanyo’s total sales during its firstyear and break even or perhaps generate a profit of $10 million. C19. The airplane is large enough to accommodate 700 passengers. D20. The general manager was very glad that the board meeting passed off without a hitch.B21. He stayed at a five-star hotel which befitted a person in his position. A22. The day when penicillin was discovered is considered as a marker in the medical history. D23. It suddenly occurred to me that we should make a new plan before negotiation. C24. They spent almost one hour unloading the parcels from the truck. A25. She married him because she could not resist the lure of his money. A26. He showed his frank opinion, saying that my plan won’t succeed. B27. The airline carries freight only; it has no passenger service. C28. After John left school, he found a job delivering newspapers to the local residents. B29. Meanwhile, statistics suggest that this year’s inflation rate will drop sharply. C30. Retailers already feel the pinch. A31. America’s debt burden is not concentrated in one or two isolated pockets of the population, it’s pandemic. A单词英译中，中译英Part II. Translate the following terms from English to Chinese or from Chinese to English.global corporation 全球化公司economic boom 经济繁荣joint-venture 合资ownership 所有权headquarters 总部entrepreneur 企业家equity 资产bargaining power 谈判力overhead 企业一般管理费用stock options 股权performance-based pay 基于绩效的报酬consumer appliance 消费类家电competitive edge 竞争优势policy-holder 投保人personal effects 个人财产natural calamities 自然灾害insurance premium 保险费用insurance companies 保险公司insurance contracts 保险合同insurance amount 保险金额insurance coverage保险承保范围marine coverage 海险salvage charge 救助费用general average 共同海损commission 佣金make decisions 决策containerization 集装箱运输mass production 大规模生产food chain 食物链venture capital 风险资本distributor 分销商chain stores 连锁商店phone interview 电话访谈selling point 卖点vending machine 售货机billboard 广告牌promotion 促销cinema commercials 电影商业广告片leaflet 宣传传单poster 海报zero-sum game 零和游戏search engine 搜索引擎stock prices 股市行情financial crisis 金融危机business model 商业模式electronic commerce (e-commerce) 电子商务globalization 全球化intellectual capital 知识资本，智力资本national asset 国有资产阅读Part III. Reading comprehension.Passage 1 IBM’s E-Ads Compute with Consumers The most overused word in marketing these days is ―brand‖. Every company claims that its advertising is all about brand-building, but few companies actually succeed.A prominent exception is IBM, International Business Machines. Since 1994, when it fired its 40 ad agencies worldwide and consolidated its account at Ogilvy & Mather, BigBlue1. The author uses ―Marlboro Country‖ and ―McDonaldland‖ to _____ C ____.2. The world ―cement‖ in the last sentence of paragraph 4 means to ____ A ___.3. When you have problems concerning e-business, you should turn to ___ B ___ for help.4. The secret of IBM’s success in ads is ______ A _____.5. The last paragraph tells us that the real success of a business depends on ____ D ____.Passage 2 Greenwich Mean TimeHow did the name of a pleasant part of London situated by the River Thames become synonymous with international time keeping? The reasons go back into history. Thousands of years ago, people had no reason to divide their lives into hours and minutes. Their time was the movement of the sun, which created day and night, and the rhythm of the seasons. But, as human societies became more complex, this pleasant state of affairs –or so it appears to modern clock watchers –was a handicap to trade and effective government. Gradually, a 24-hour1. Why was a national standard time established? B2. Greenwich Mean Time ___ C ____.3. In 1912 an international conference decided that ____ C ____.4. Recent scientific discoveries show that _____ C _____.5. The purpose of this passage is to _____ A _____.Passage 3 From Cattle to CashIn Europe and Asia the first ―medium of exchange‖or ―standard of value‖was not gold or silver, but cattle (the Spanish words relating to cattle, pecuniario, and to money, pecuniario, both have the same root). In other parts of the world, however, such different commodities as salt, shells, stones and cocoa beans were all used as ―money‖. They all offered advantages over the barter system (the direct exchange of goods), but none of them was perfect. Some were too heavy, some could not be divided into small enough parts, (how much of a cow would you need to buy a piece of cheese?) some were not permanent enough. The solution was money as we know it, that is, money in the form of coins.The invention of coins appears to have occurred almost simultaneously but quite independent in ancient Greece and in China in about 700 B.C. The reason why historians believe the development was independent is because of the notable differences in the two systems. In Greece, a natural alloy of gold and silver called ―electrum‖ occurred in rivers in nugget form. The first coins were taken out of these nuggets with a tool called a punch. In order to distinguish these coins from gold ornaments, a design, or ―type‖, to use the technical numismatic (钱币学)1. According to this passage, all of the following have been used as money except _D ___.2. The invention of coins is thought to have taken place in _____ B ____.3. What distinguishes traditional Chinese coins from Western ones? D4. The title ―From Cattle to Cash‖ conveys the message that _____ C ______.5. The author’s tone is ______ A ____.Passage 4 Radio TelescopesRadio astronomy has greatly increased our understanding of the universe. Radio telescopes have one big advantage over conventional telescopes in that they can operate in all weather conditions and can pick up signals coming from very distant stars. These signals are produced by colliding stars or nuclear reactions in outer space. The most powerful signals that have been emitted by that seem to be truly colossal (巨大的)1. What is the main subject of the passage? D2. According to the passage, one of the big advantages of radio telescopes over conventional telescopes is that ____ D ______.3. The most powerful signals have been sent by ____ C ___.4. The result of the understanding of these signals may ____ C ____.5. It can be inferred from the last few sentences of the passage that ___ B ____.Passage 5 Nervous GuestAnybody who does not like dogs and comes to visit me at home would certainly feel very uncomfortable. Why? Because not only do I have three dogs, but each of their characters is very different.Once a friend of mine came to visit me. As soon as he started to approach the front door the dogs immediately began to bark very loudly from inside the house, thanks to their highly efficient sense of smell. It was as if to announce to the host that the guest had arrived!When my friend heard the dogs’barks he turned pale with fright and hesitated, not knowing whether or not he should continue as far as the door. After a little while he plucked up the courage to knock on the door. When I opened the door, I just saw him jump back a few feet as if several big ferocious dogs were about to attack him. However, when he only saw three over-friendly little white dogs his face went purple!Then my friend cautiously entered the house. In the kitchen he very politely chose to sit in the oldest chair. However, when he did, one of my dogs began to growl at him. The chair had always been that dog’s favorite and he usually never let people sit in it! I felt incredibly embarrassed but no sooner had I started to explain than one of my other dogs jumped up on his lap and began to lick his face like a lunatic. This really made him feel uncomfortable! A nervous smile appeared on my friend’s face, and he most certainly must have felt tense.After this bombardment (轰击)1. Owing to __ B ___, the dogs immediately ran out of the house and shouted at the guest.2. After his meeting with the dogs, the friend ___ A ___ whether to enter the house or not.3. The friend became __ D ____ when he entered the house.4. The narrator ____ A ____ about the dogs’ behavior.5. What does the sentence ―love me love my dogs‖ suggest in the end of the passage?CPassage 6 The Police ComputerIn Chicago, police computers turn out daily, weekly, and monthly reports that hardlygive crooks breathing time before special details are tracking them down. Last spring, for example, two armed robbers pulled five holdups (拦截行人的强盗行为)puters can be used to ____D_______.2.A large number of cities are beginning to ______A______.3.From the passage, we have learned that _____B_______.4.What can the police computer in St. Louis do? _____C______5.What’s the use of putting the car license numbers of dangerous criminals intocomputers? DPassage 7 The Post-crisis Economics of Southeast Asia The post-crisis economics of Southeast Asia, which rebounded strongly in 1999 from their 1998 recessions, are off to another year growth with generally tame inflation. However, individual performance is varied, depending on the contribution of electronics exports and the degree of recovery in domestic demand. Also, the outlooks are clouded by slow reform efforts and political uncertainty.Malaysia and Singapore are the growth leaders, benefiting the most from the global tech boom. First-quarter growth from a year ago was 11.7% and 9.1%, respectively. Exports of electronics equipment and components are 47% of gross domestic product in Singapore and 65%1.What topic is the author concerned with? ____B_______2.According to the author, how are the economies of Southeast Asia at present? ___A___3.The passage points out that __D__ are the potential threat to the economies ofSoutheast Asia.4.According to the author, which of the following does not have the capability to increasethe competitiveness of a region? C5.From the passage, we know that the economies of Southeast Asia ___D____.Passage 8 Bill GatesHe is the most famous businessman in the world. He is also the richest man in the world—worth an estimated $40 billion in 1997 according to Forbes magazines. Without a doubt, Bill Gates is one of the most important minds of our era—the Thomas Edison of our time. He has dominated the revolution in personal computering and is a self-described ―hard-coretechnoid‖ (彻底的技术狂),1.We can learn from the passage that Bill Gates is ____D____.2.Bill Gates was born in ___C_____.3.Traf-O-Data was founded by _____B________.4.At the very beginning, Bill’s company worked at ______A_____.5.The last paragraph of the passage suggests that ____D____.Passage 9 The EuromarketsThe Euromarkets are international money and capital markets; they are concerned with Eurocurrencies, that is, currencies traded in Europe (and elsewhere) outside their home countries. The most important Eurocurrency is the Eurodollar. The Eurodollar marketdeveloped in the second half of the 1950s. When the London banks, during the sterling (英币的) crisis of 1957,1.The Euromarkets are concerned with ____D_____.2.The Eurodollar markets developed ____C______.3.The Eurodollar markets developed rapidly when ____B______.4.____D_____ play the chief role in the Euromarkets.5.Banks in the Euromarkets accept deposits of dollars and other convertible currenciesfrom ___D______.Passage 10Abraham Maslow (1908-1970) is a well-known American psychologist who believed that needs were the underlying causes of all behavior. The only reason a person does anything is to satisfy needs. Thus, we can understand human motivation if we understand needs. Based on his research and experience, Maslow divided human needs into five levels: physiological, security, social, esteem, and self-actualization. He arranged these needs in a hierarchy of importance and developed a hierarchical model of human motivation, in which a higher need is expressed only after lower needs are fulfilled.1. In the passages, human needs are _____B______.2. If you want to motivate people, it is advisable to _____D_____.3. Physiological needs are the basic needs for _______A______.4. The selection of one’s job usually belongs to _____D______.5. People usually meet their social needs by _____C____.6. Social status contributes more to one’s ____C_____.Passage 11Today more and more people believe that business should play an active role in improving society and solving social problems. For example, we expect that businesses will take care not to pollute the air we breathe or the water we drink. We also expect them to offer fair wages and employee benefits and to provide a satisfactory product or service at a reasonable price. Many companies recognize this and have stated publicly that they will act as a good citizen. They support local arts, build parks, raise funds for charities, and try to put back some of their profits into the community that has made their success possible.A good7. The passage mainly focuses on _____B______.8. To take social responsibility, a business should ___D_____.9. According to the text, a business should be socially responsible because____C____.10. Many business organizations are willing to take social responsibility because thepractice also does good to_______D_____.11. From paragraph 4, we can infer that those who do not act out of a sense of socialresponsibility are____A____.run12. To act in a socially responsible way, a business must _____B_____Passage 12Personnel management is regarded as a profession. Many observers believe that the most important and pressing problems of future industrial societies wi11 not be solely concerned with production or technical questions, but will be people-oriented and will involve a knowledge of social and behavioral sciences and of the personnel function. Personnel management is now often called human resources management (HRM).13. This extra serves as ______B_____.14. Originally the emphasis of personnel management was on _____A________.15. The future personnel management is bound to _____A________.16. According to the author, ______D____ is not only an integral part of the organizationbut of management itself.17. Recently the scope of personnel management has been enlarged to include _____C_____.18. In a broad sense, work design and the flow of work as well as the managerial spans ofcontrol fall into the category of ____A____.19. According to the text, ___C___ in a company or business is involved with personnelmanagement.20. The fundamental role of personnel management is to ______B_______.Passage 13It is China’s first start-up Internet company, Intel’s first venture capital investment in China, and the first major Chinese-language search engine and directory. A lot of firsts ventured by Sohu, or ―searching fox‖ in English, is drawing much media attention.The famous was launched by Zhang Chaoyang in February 1998, (基础)21. Which of the following does NOT belong to the firsts ventured by Sohu? D22. ―Netizen‖ probably refers to B23. In what sense does Internet generate value for the society? B24. How can Internet contribute to a more mature society? C25. What is this passage mainly about? CPassage 14 Strategies to Curb InflationSince administrative methods are undependable in curbing inflation in the long run, radical measures such as reforms of enterprise management and the trade system should be promoted next year to realize the government’s goal of reining in prices.State-owned enterprises, especially sellers of basic foods, should improve their management, adapting to market forces so that they can continue to play a positive role in stabilizing prices even without the support of large government subsidies.Increases in food prices, a major promoter of inflation, should be controlled by taking comprehensive steps to assure a sufficient food supply, suggests Ren Xingzhou, a research fellow with the Development Research Center under the State Council.Having kept the national inflation rate under 15 percent this year – a 6 percent1. Please specify which of the following factors should be mainly responsible for inflation?D2. What is the inflation rate last year according to the passage? B3. Please pick up measures that have been used to curb inflation this year? D4. What is the national economic growth rate this year according to the passage? B5. According to the passage, government control is still in use and effective. Please tellwhich of the following is now NOT under strict control from central government? D Passage 15 Business Firms are Important to UsEvery day you make a constant use of goods and services that business firms produce. You make a telephone call, turn on a light, read a newspaper, listen to the radio, or watch television. You take these for granted, just as you air and sunshine. Yet most of us could not get along without business firms any more than we could get along without air and sunshine.1.Most of us could not get along without business firms because _____A_____.2. The sentence ―Yet most of us could not get along without business firms any more than we could get along without air and sunshine‖ means business firms ____A______.3. The sentence ―… each household was in business for itself‖ means each household ____C___.4. In general, how well we live depends on business conditions because of ____A____.5. Which statement is not correct? C英译中Part IV. Translate the following passages into Chinese.1.The multinational is big and rich. It often operates in industries which are difficult to enter and of vital nationalimportance, e.g. the computer, chemical and automobile industries. Most important of all, the main objective of the multinational is to organize its activities around the world so as to maximize global profits and global market shares. Each subsidiary is part of an international network of affiliates. These all interact with each other. Each part serves the whole. The center controlling the network—the multinationals’ headquarters—is not under the control of the host government. It is frequently thousands of miles away from these subsidiaries.1、跨国公司一般很大而且很有钱。

西南大学《专业英语》网上作业题及答案

（0089）《专业英语》网上作业题答案1：第一次作业短语英译汉2：第二次作业短语汉译英3：第三次作业单项选择4：第四次作业单项选择5：第五次作业翻译6：第六次作业写作参考答案：1、数字（激光）视盘，DVD2. （文）字处理程序3. 存储（器）芯片，内存芯片4. 密码电报5. 蜂窝电话，移动电话，手机6. 集成电路7. 电子邮件网规，电子邮件网络礼节8. 电子邮件常规9. 点击图标10. 密件，秘密文件11. 密级信息12. 签名文件13. 主存储器14. 虚拟存储器，虚拟内存15. 分时段的多任务处理16. 桌面操作系统17. 电子游戏机18. 电子数据表程序，电子制表程序19. 存储寄存器20. 函数语句21. 关系（型）语言22. 面向对象语言23. 汇编语言24. 中间语言，中级语言25. 人工智能1£º[ÂÛÊöÌâ]Çë½«ÏÂÁÐÓ¢ÎÄÒëÎªÖÐÎÄ£º1£®A computer system includes a computer, peripheral devices, and software. The electric, electronic, and mechanical devices used for processing data are referred to as hardware. In addition to the computer itself, the term "hardware¡±refers to components called peripheral devices that expand the computer's input, output, and storage capabilities. Computer hardware in and of itself does not provide a particularly useful mind tool. To be useful, a computer requires a set of instructions, called software or a computer program, which tells the computer how to perform a particular task. Computers become even more effective when connected to other computers in a network so users can share information.2. Many schools and businesses have established e-mail privacy policies, which explain the condition under which you can and cannot expect your e-mail to remain private. These policies aresometimes displayed when the computer boots or a new user logs in. Court decisions, however, seem to support the notion that because an organization owns and operates an e-mail system, the e-mail message on that system are also the property of the organization. The individual who authors an e-mail message does not own all rights related to it. The company or school that supplies your e-mail account can, therefore, legally monitor your messages. You should use your e-mail account with the expectation that some of your mail will be read from time to time. Think of your e-mail as a postcard, rather than a letter, and save your controversial comments for face-to-face conversations.3£®Multitasking, in computer science, is a mode of operation offered by an operating system in which a computer works on more than one task at a time. There are several types of multitasking. Context switching is a very simple type of multitasking in which two or more applications are loaded at the same time but only the foreground application is given processing time; to activate a background task, the user must bring the window or screen containing that application to the front. In cooperative multitasking, background tasks are given processing time during idle times in the foreground task (such as when the application waits for a keystroke), and only if the application allows it. In time-slice multitasking, each task is given the microprocessor's attention for a fraction of a second. To maintain order, tasks are either assigned priority levels or processed in sequential order. Because the user's sense of time is much slower than the processing speed of the computer, time-slice multitasking operations seem to be simultaneous.4. One especially powerful feature of OOP (objected-oriented programming) languages is a property which is known as inheritance. Inheritance allows an object to take on the characteristics and functions of other objects to which it is functionally connected. Programmers connect objects by grouping them together in different classes and by grouping the classes into hierarchies. These classes and hierarchies allow programmers to define the characteristics and functions of objects without needing to repeat source code, the coded instructions in a program. Thus, using OOP languages can greatly reduce the time it takes for a programmer to write an application, and also reduce the size of the program. OOP languages are flexible and adaptable, so programs or parts of programs can be used for more than one task. Programs written with OOP languages are generally shorter in length and contain fewer bugs, or mistakes, than those written with non-OOP languages.5. In software, a bug is an error in coding or logic that causes a program to malfunction or to produce incorrect results. Minor bugs-for example, a cursor that does not behave as expected-can be inconvenient or frustrating, but not damaging to information. More severe bugs can cause a program to "hang¡± (stop responding to commands) and might leave the user with no alternative but to restart the program, losing any previous work that has not been saved. In either case, the programmer must find and correct the error by the process known as debugging. Because of the potential risk to important data, commercial application programs are tested and debugged as completely as possible before release. Minor bugs found after the program becomes available are corrected in the nest update; more severe bugs can sometimes be fixed with special software, called patches, that circumvents the problem or otherwise reduces its effects.²Î¿¼´ð°¸£º´ð°¸¼û½Ì²ÄÃ¿¿ÎºóµÄ·ÒëÁ·Ï°´ð°¸¡£1：[论述题]请选择下列一个题目写一篇不低于150个词的英文短文.1. The advantages of computer2. How to work with computer?3. How computers change our life?4. My view on chat on the Internet5. My view on computer security参考答案：要求文章用词简单，拼写正确，语法无大的错误，不偏题。

专业英语结课作业

专业英语结课作业通信与信息工程学院专业英语结课作业班级：姓名：学号：指导教师：作业时间：成绩：评语：通信与信息工程学院二〇一五年Passage B Binary System and Logic Systems1.Binary SystemA digital system functions in a binary manner.It employs devices which exist only in two possible states.A transistor is allowed to operate at cutoff or in saturation, but not in its active region.A node may be at high voltage of, say, 4±1V or at a low voltage of, say, 0.2±0.2V, but no values are allowed.Various designations are used for these two quantized states, and the most common are listed in Table 3.1.In logic,a statement is characterized as true or false, and this is the first binary classification listed in the table. A switch may be closed or open, which is the notation under 9, etc.Binary arithmetic and mathematical manipulation of switching or logic functions are best carried out with classification 3, which involves two symbols, 0(zero) and 1 (one).The binary system of representing numbers will now be explained by making reference to the familiar decimal system.Inthe latter the base is 10(ten), and ten numerals,0,1,2,3···,9, are required to express an arbitrary number.To write numbers larger than 9, we assign a meaning to the position of numerals in an array of numerals.For example, the number 1264 (one thousand two hundred sixty four) has the meaning1264=1×103＋2×102＋6×101＋4×100Thus the individual digits in the number represent the coefficients in an expansion of the number in powers of 10.The digit which is farthest to the right is the coefficient of the zeroth power; the next is the coefficient of the firth power.and so on.In the binary system of representation the base is 2, and only two numerals 0 and 1are required to represent a number.The numerals 0 and 1 have the same meaning as in the decimal system ,but a different interpretation is placed on the position occupied by a digit.In the binary system the two rather than ten as in the decimal system.For example, the decimal number 19 is written in the binary representation as 10011 since10011=1×24＋0×23＋0×22＋1×21＋1×20 =16＋0＋0＋2＋1=19A short list of equivalent numbers in decimal and binary notations is given in Table3.2.A general method for converting from a decimal to a binary number is indicated in Table 3.3.The procedure is the following.Place the decimal number (in this illustration,19) on the extreme right.Next divide by 2 and place the quotient (9) to the left and indicate the remember (1) directly below it.Repeat this process (for the next column 9÷2=4 and a remainder of 1) until a quotient of 0 is obtained.The array of 1’s and 0’s in the second row is the binary representation of the origin decimalnumber.In this example, decimal 19=10011 binary.A binary digit (a 1 or a 0) is called a bit.A group of bits that has the same significance is called a byte, word, or code.For example, to represent the 10 numerals (0,1,2,3···,9) and the 26 letters of the English alphabet would require 36 different combinations of 1’s and 0’s.Since 25<36<26, then a minimum of 6 bits per bit arerequired in order to accommodate all the alphanumeric characters.In this sense a bit is sometimes referred to as a character and a group of one or more characters as a word.2. Logic SystemsIn a DC, or level-logic, system a bit is implemented as one of two voltage levels.If, as in Figure 3.6(a), the more positive voltage is the 1 level and the other is the 0 level, the system is said to employ DC positive logic.On the other hand, a DC negative-logic system,as in Figure 3.6(b),i s one which designates the more negative voltage state of the bit as the 1 level and the more positive as the 0 level.It should be emphasized that the absolute values of the two voltages are of no significance in these definitions.In particular, the 0 state need not represent a zero voltage level (although in some systems it might).The parameters of a physical device (for example,VCE·sat of a transistor) are not identical from sample to sample,and they also vary with temperature.Furthermore, ripple or voltage spikes may exist in the power supply or ground leads, and other sources of unwanted signals, called noise,may be present in the circuit.For these reasons the digital levels are not specified precisely, but as indicated by the shaded region in Figure 3.6,each state is defined by a voltage range about a designated level, such as 4±1V and 0.2±0.2V.In a dynamic,or pulse-logic,system a bit is recognized by the present or absence of a pulse.At 1 signifies the existence of a positive pulse in a dynamic positive-logic system; a negative pulse denotes a 1 in a dynamic negative-logic system a 0 at a particular input (or output) at a given instant of time designates that no pulse is present at that particular moment.B篇二进制系统和逻辑系统1.二进制系统一个数字系统作用以二进制方式。

大学英语专业翻译作业

1)这种力，是一般人看不见的生命力，只要生命存在，这种力就要显现。

It is an invisible force of life. So long as there is life, the force will show itself2)凭窗站了一会，微微的觉得凉意侵入。

转过身来，忽然眼花缭乱，屋子里的别的东西，都隐在光云里；……Standing at the window for a while, I felt a bit chilly. As I turned round, my eyes suddenly dazzled before the bright light and could not see things distinctly. Everything in the room was blurred by a haze of light.3)这架收音机该有多大的重量啊！它载着解放区人民的心，载着全中国人民的希望，载着我们国家的命运。

What a heavy load this aero plane bore! It carried the hearts of people of the liberated areas, the hopes of the entire Chinese people, and the destiny of our country.4)看着信，林震不禁独自笑起来了，他拿起笔把“中于”改成“终于”，准备在回信时告诉他们下次要避免别字。

5)人无千日好，花无百日红。

Man cannot be alwaysfortunate; flowers do not last forever.（1）6)除了我这间房，大院里还有二十多间房呢。

一共住着多少家子，谁说得清？住两间房的就不多，又搭上今儿个搬来，明儿个又搬走。

我没那么好的记性。

大家见面，招呼声“吃了吗？”透着和气。

专业英语作业答案

Solutions 1Question 1-5C BD D AQuestion 6(1) Accounting is not the same as bookkeeping.Accounting is a service activity that includes the measurement, recording,summarization, and reporting of economic information to assist financialinformation users to make decisions. Accounting is also described as aninformation system, which measures business activities, processes information into reports and communicates these findings to decision makers. Actually,Accounting covers a broader scope of activities than bookkeeping. Accounting includes the analysis and interpretation of accounting information intended to be used by external and internal decision makers, while bookkeeping only records transactions and events.(2) Financial accounting is the area of accounting aimed at serving external users byproviding them with financial statements. These statements are known asgeneral-purpose financial statements, because external users rely on thesestatements with a broad range of purposes. The activities involved in financial accounting include statement preparation, statement analysis, auditing, accounting regulatory, accounting consulting, accounting planning, and forensic accounting.Managerial accounting is the area of accounting that serves the decision-making needs of internal users. Internal reports are not subject to the same rules asexternal reports and are designed with the special needs of internal users in mind.The activities included are general accounting, cost accounting, budgeting,internal auditing, and management consulting.Question 7。

专业英语作业--Metals

Lesson 1MetalsThe use of metals has always been a key factor in the development of the social systems of man. Of the roughly 100 basic elements of which all matter is composed, about half are classified as metals. The distinction between a metal and a nonmetal is not always clear-cut. The most basic definition centers around the type of bonding existing between the atoms of the element, and around the characteristics of certain of the electrons associated with these atoms. In a more practical way, however, a metal can be defined as an element which has a particular package of properties.Metals are crystalline when in the solid state and, with few exceptions (e.g. mercury), are solid at ambient temperatures. They are good conductors of heat and electricity and are opaque to light. They usually have a comparatively high density. Many metals are ductile-that is, their shape can be changed permanently by the application of a force without breaking. The forces required to cause this deformation and those required to break or fracture a metal are comparatively high, although, the fracture forces is not nearly as high as would be expected from simple consideration of the forces required to tear apart the atoms of the metal.One of the more significant of these characteristics from our point of view is that of crystallinity. A crystalline solid is one in which the constituent atoms are located in a regular three-dimensional array as if they were located at the corners of the squares of a three-dimensional chessboard. The spacing of the atoms in the array is of the same order as the size of the atoms, the actual spacing being a characteristic of the particular metal. The directions of the axes of the array define the orientation of the crystal in space. The metals commonly used in engineering practice are composed of a large number of such crystals, called grains. In the most general case, the crystals of the various grains are randomly oriented in space. The grains are everywhere in intimate contact with one another and joined together on an atomic scale. The region at which they join is known as a grain boundary.An absolutely pure metal (i.e. one composed of only one type of atom) has never been produced. Engineers would not be particularly interested in such a metal even if it were to be produced, because it would be soft and weak. The metals used commercially inevitably contain small amounts of one or more foreign elements, either metallic or nonmetallic. These foreign elements may be detrimental, they may be beneficial, or they may have no influence at all on a particular property. If disadvantageous, the foreign elements tend to be known as impurities. If advantageous, they tend to be known as alloying elements. Alloying elements are commonly added deliberately in substantial amounts in engineering materials. The result is known as an alloy.The distinction between the descriptors “metal” and “alloy” is not clear-cut. The term “metal” may be used to encompass both a commercially pure metal and its alloys. Perhaps it can be said that the more deliberately an alloying addition has been made and the larger the amount of the addition, the more likely it is that the product will specifically be called an alloy. In any event, the chemical composition of a metal or an alloy must be known and controlled within certain limits if consistent performance isto be achieved in service. Thus chemical composition has to be taken into account when developing an understanding of the factors which determine the properties of metals and their alloys.Of the 50 or so metallic elements, only a few are produced and used in large quantities inengineering practice. The most important by far is iron, on which are based the ubiquitous steels and cast irons (basically alloys of iron and carbon). They account for about 98% by weight of all metals produced. Next in importance for structural uses (that is, for structures that are expected to carry loads) are aluminum, copper, nickel, and titanium. Aluminum accounts for about 0.8% by weight of all metals produced, and copper about 0.7%, leaving only 0.5% for all other metals. As might be expected, the remainders are all used in rather special applications. For example, nickel alloys are used principally in corrosion-and heat-resistant applications, while titanium is used extensively in the aerospace industry because its alloys have good combinations of high strength and low density. Both nickel and titanium are used in high-cost, high-quality applications, and, indeed, it is their high cost that tends to restrict their application.We cannot discuss these more esoteric properties here. Suffice it to say that a whole complex of properties in addition to structural strength is required of an alloy before it will be accepted into, and survive in, engineering practice. It may, for example, have to be strong and yet have reasonable corrosion resistance; it may have to be able to be fabricated by a particular process such as deep drawing, machining, or welding; it may have to be readily recyclable; and its cost and availability may be of critical importance.New wordscrystalline adj.晶体的ambient adj.周围环境的opaque adj.不透明的ductile adj.柔软的；易延展的permanently adv.永久地，长期不变地chessboard n.棋盘grain n.晶粒metallic adj.金属的，含金属的detrimental adj.有害的impurities n.杂质consistent adj.一致的ubiquitous adj.普遍的，无处不在的aluminum n.铝esoteric adj.秘传的；限于圈内人的readily adj.容易的Phrase and Expressioncentersaround以…为中心certainoftheelectrons某种电子withfewexceptions极少例外generalcase一般情况下alloyingelement合金元素sufficeittosay只要说…就够了译文：作业一：金属在人类社会的发展中，金属的应用起着关键性的作用。

专业英语作业和答案

一、请将下列英文句子翻译成汉语（1）The recrystallized grain size at the instant of recrystallization is inversely proportional to the degree of deformation .再结晶瞬间的再结晶的晶粒度大小和变形程度成反比。

（2）A mechanism or linkage is a constrained kinematic chain , and is a mechanical device that has the purpose of transferring motion and/or force form a source to an output .机构或连杆是一个约束运动链，并且是一个机械装置，这个装置可以把输入端的运动或是力传输到输出端（3）In the United States material removal is a big business---in excess of $36×109 per year , including material , labor , overhead , and machine-tool shipments , is spent .在美国，机加工是一个很大的市场------每年的花费超过36×109 美元，包括：原材料费用，劳务费用，管理费用，机床运输费用。

（4）The basic tool—work relationship in cutting is adequately described by means of four factors ：tool geometry , cutting speed , feed , and depth of cut .切削加工中，基本的刀具—工件的关系可以从四个方面来描述：刀具的几何外形，切削速度，吃刀量，切削深度。

室内空间分析专业英语作业

低矮的，自由开关的小窗，还有可以伸手碰到的灯开关，都是为他（之之）设计的。小孩的独立洗漱池，专门为（之之）他设计的，方便小朋友清洗。位置刚刚好，紧凑而方便。灯的开关刚好是（之之）的高度，在他的门上也加了一个矮的把手。细节处理都考虑到小孩的需求。
Desgign scenarios give full consideration to children's needs,How tu build a cozy little nest. He could de in the yard,playing freely. Replace the old steel Windows with woodden Windows,And the whole house design,It's a lot more
室外之间的过渡，这样他（之之）就可以光着脚从家里跑到平台外面，坐在那里玩。
Glen and Yone are both smiling people, gentle and kind. So, his home is often The house is full of guests. Often there will be friends to cook together, happy and happy. In trivial daily life, we often cannot enjoy the pleasure of things so much because of the influence of the environment of the week, so as to ignore the small and subtle moves in our lives.
夜晚，透过玻璃门，看着门里的灯光，舒服而又简洁，中间用小房子隔断造型，童趣十足。一家三口住在租来的65平米的北京胡同，经房东同意后，夫妻俩造价40万将其打造成温馨的小屋。你觉得值得吗？租来的房，花这么大的心思，金钱去打造。

计算机专业英语作业及答案

计算机专业英语作业答案（供参照）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(写出以下词组的汉语。

) 1． central processing unit （ CPU）中央办理器 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.(依据汉语写出相应的英语缩写。

)1．随机储存器RAM2．只读储存器ROM3．传输控制协议TC P4．数字视频光盘DVD5．通用串行总线USB6．计算机协助设计CAD7．计算机协助制造CAM8．中央办理器CPU(三 )．Translate the following Chinese into English.(依据汉语写出相应的英语。

)1．键盘keybord2．鼠标mouse3．扫描仪scanner4．打印机printer5．输入input6．输出output7．显示器monitor8．储存器storage9．数据库database 10．操作系统operating system11．应用软件application software 12．字办理器word processor13．网络阅读器web browser二．Tell whether the following statements are true(T) or false(F)判.(断正误。