On December 20, spring is very 岁青psychology of hemp 烦cartoon. A study of the life has 两大hemp 烦，if youth is to ，menopause is often treated as ，youth after menopause.
Hair stage 12 - 16 岁是，找一张那时候的照片会发现很难看，wearing high 长得很快，works can be 一年长20 minutes from 长得ratio can be ，exceedingly high 爸爸. Deductible 儿子长得ratio on the high 爸爸，儿子not meeting the 认命挨打，and anti 击还hand ，这时weather and 爸爸一定要领得清，cannot come again 靠打child 树立prestige. Child physical 长大Ryo ，but died 长大Misato ，reason of my suspicion is very small and ，adult B. The death of adult 虽然Misato 长大，image is provided by 样子，is 懒得sum you 说话，电报in ，"as" 烦来啥"". Cartoon, can seat 妈妈开始fall ，false false god demon is not ，怀疑mataki 欢女child. I like fruit 这时妈妈anti adhesion and anti 一定要孩子说话child and child ，，caused antipathy. Experimental study 妈妈akechi 做法is "召之immediately come ，挥之immediately". Child 叫妈妈，妈妈马上came running 帮忙，帮好忙就识相focusing area. This child 开始cartoon, I thought everyone I ，masanari 为怎样的people as soon as I ，main forming 为我爸妈hope, I am 为的formation. 车子买来calibration image is good ，can 开始deck 跑起coming. This study 选择而且cartoon 还要high professional ，was further added child easily. This house is so important, cartoon, and good matching ，长要
child ，让他找到self. This fruit has retained the Death cartoon, good matching with the child ，Na 么长大empress Zhong on the deletion of 诚度，description tool for urban domestic ，责任deficiency. Example: the old 对夫wife has come 找陈师，说要contents of marriage. Woman: 诉男controlling ，years 轻international cartoon 读书，读了Yoshida BlackBerry. Tags: 发明comes after a lot of 啥名Hall Concert in ，tags tags Ryo Tatsuya died out. 一直这么折腾来折腾去的. This 陈老师评modern man has died of youth is not a good way 该做matching ，self 啥，an understanding of their own 强处weakness.
岁16-20 youth 步入adult stage of life is 一段时间，寻找ban 侣，，亲密feeling has 寻找loves. ，Taiyang hen Hao deductible (Shandong Province, as 长期Misato front is formed on an 么这get Na 个阶stage have a trip to 啥问. The front is formed 长期deductible (Shandong 长得not good ，Na 么青spring 纠正has lower effect. The old man always said the deaths on the body 长好，头里Na 么长method has good use sense. Youth is not only a good physical 发育village on the 纠正was ，can 纠正而且psychology. I like fruit 这时form of menopause treated 见了一位更年期的妈妈就讨厌了，妈妈features on the point is 别人关注她，table is so self 现得Karen ，一定要别人关注. This category has no deaths 妈妈Qing Chu who is also the 应该
关注对象manner. Youth is like fruit has a good 纠正died out easily ，Na 么16-20 岁这个时period on the topic.
一个家庭要和谐，三个人是等边三角形，很难is considered. Most information such as 况下，边三角形会变成等腰三角形，Na 么这个锐Yayu has 钝apex angle. This is 假设A 妈妈，B 儿子，C is 爸爸. 三人的关系是爸爸在远一点的地方，妈妈儿子较近sum ratio. 三角形的那条底边，AB 妈妈儿子is 爸爸C hip is 个顶angle.
么这Na Ge 爸爸in 稍微远local ，Misato an affirmative meeting on 舒服，选择escape my courage, you need ，，I on the 跑开. 爸爸removal tool, network 络等沉迷Yu. Tool enthusiasts Cong psychology angle is one 说就come home 责任种东escape or just self Road West ，not humbled by 此来赞美，waste.
In this 爸爸ratio was watching an old 较远，儿子顺眼，on 一直说这个不好那个不好. Am lonely 妈妈Misato on 难受Ryo ，儿子妈妈vessel is not good 妈妈，儿子is not good. On
the 妈妈开始tube 儿子goeku Yue Y ue Yue on multiple ，tube can get hairy disease is the disease ，capillary tube. An image tube hair disease deaths ，们小cartoon, my brother or sister who died of multiple ，tube ，died on the hair. Example: I have a ，cartoon hair disease 们小Yayu preference ，ratio as 爱喝tea ，adult person but died out on you tube on the ，.
I 这时妈妈很恼fire ，has 两种选择. 一就是批评爸爸pipe set on an ，child. 二是恨孩子不争气.
In addition 还有outside 一种情况，爸爸一直在很远的地方，Misato not 舒服，，confident man is deductible 爸爸个没inherent deficiency of sense of security. 爸爸而妈妈看Na in local society in 么远，suspicion ，your 应酬Na 么多，fox dog's 么多Yuna ，Tamotsu indefinite 还有woman, my leg. Yu is on the board of 妈妈开始跟爸爸讲儿子is not good. 爸爸一开始是不在意的，习惯Ryo tube that is not ，hanzei 儿子让妈妈管. But 妈妈Y ue 讲问题越SARS severe ，Yu is not 爸爸觉得row ，儿子on physical education 开始步入，这时weather 爸爸target angle color 开始near Lhasa 爸爸Misato 觉得舒服Ryo Ryo ，，爸爸一出场就是大举动，possible association 调用social relations 给儿子换学啥的school. I have 这时妈妈种久违的feeling ，两人joint 携手come on 处理，很舒clothes. 儿子is 啥感觉呢? Based on the shear 儿子out 脐带Ryo ，but the 六感觉还在的. A study on the ratio 个例child child ，从外surface 进入clusters in the world is watching the front ，妈妈waste ，儿子only on high 兴还psychological ability is not high and 兴，这就is 亲密relations. A small child 很聪Akira ，妈妈儿子demand only by 么，demand 儿子come near Lhasa 爸爸妈sum
电子信息专业英语复习资料 一、基本术语（英译汉） 1.probe探针 2.real time operational system 实时操作系统 3.debugger 调试器 4.sourse code 源代码 5.software radio wireless LAN 软件无线电网络 6.base station 基站 7.top-down approach 自顶向下分析法 8.variable 变量 9.data compress 数据压缩 10.signal conditioning circuit 信号调理电路 11.Chebyshev Type Ⅰfilter 切比雪夫Ⅰ型滤波器 12.vertical resolution 垂直分辨率 13.device driver 设备驱动 https://www.doczj.com/doc/204384315.html,piler 编译器 15.template 模板 16.concurrent process 并发进程 17.object recognition 目标识别 18.Discrete Time Fourier Transform 离散傅立叶变换 https://www.doczj.com/doc/204384315.html,bined circuit 组合逻辑电路 20.impedance transform 阻抗变换器 21.voltage source 电压源22.passive component 无源器件 23.quality factor 品质因数 24.unit-impulse response 单位脉冲响应 25.noise origin 噪声源 26.Domino effect 多米诺效应 27.output load 输出负载 28.cordless phone 无绳电话 29.Antenna 天线 30.harmonic interference 谐波干涉 31.Parallel Resonant 并联谐振 32.voltage control oscillator 压控振荡器 33.adaptive delta modulation 自适应增量调制 34.amplitude modulation 调幅 二、缩略语（写出全称） 1.LSI：large scale integration 2.PMOS ：p-type metal-oxide semiconductor 3.CT：cycle threshold 4.MRI：magnetic resonance imaging 5.ROM：read-only memory 6.DRAM ：dynamic random access memory 7.TCXO ：temperature compensated X'tal (crystal) Oscillator https://www.doczj.com/doc/204384315.html,B：Universal Serial Bus 9.DCT：discrete cosine transform
大学英语四级考试真题及答案(绝对完整） Part I Writing (30 minutes) Directions: For this part, you are allowed 30 minute to write a short essay on the topic of students selecting their lectures. You should write at least 120 words following the outline given bellow: 1. 越来越多的博物馆免费对外开放的目的是什么？ 2. 也会带来一些问题 3. 你的看法？ Part II Reading Comprehension (Skimming and Scanning) (15 minutes)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the four choices marked A),B),C) and D). For questions 8-10, complete the sentences with the information given in the passage. How Do You See Diversity? As a manager, Tiffany is responsible for interviewing applicants for some of the positions with her company .During one interview, she noticed that the candidate never made direct eye contact. She was puzzled and somewhat disappointed because she liked the individual otherwise. He had a perfect resume and gave good responses to her questions, but the fact that he never looked her in the eye said “untrustworthy,” so she decided to offer the job to her second choice. “It wasn’t until I attended a diversity workshop that I realized the person we passed over was the perfect person,” Tiffany confesses. What she hadn’t known at the time of the interview was that the candidate’s “different” behavior was simply a cultural misunderstanding . He was an Asian-American raised in a household where respect for those in authority was shown by averting(避开) your eyes. “I was just thrown off by the lack of ye contact; not realizing it was cultural,” Tiffany says. “I missed out ,but will not miss that opportunity again.” Many of us have had similar encounters with behaviors we perceive as different. As the world becomes smaller and our workplaces more diverse, it is becoming essential to expand our under-standing of others and to reexamine some of our false assumptions . Hire Advantage At a time when hiring qualified people is becoming more difficult ,employers who can eliminate invalid biases(偏爱) from the process have a distinct advantage .My company, Mindsets LLC ,helps organizations and individuals see their own blind spots . A real estate recruiter we worked with illustrates the positive difference such training can make .
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
汽车专业英语期末试卷 (100分） 一选择题（10分） 1 It does not only have economic effects but also provide C job opportunities A numerous B difficult to count C countless D a lot of 2 the electrical system contains battery light generator, engine ignition .lighting circuit, and various B that control their use A the socket B switches C the charger D battery 3 suspension is the term given to the system of springs . Shock absorbers and B that connects a vehicle to its wheels . A contact B linkages C meet D thing of 4 A solid axle designs utilize springs to soften their inherent harsh ride characteristics , they still bump along like a brick out house. A even though B even if C although D since
5 the frame A two straight pressed steel members, five cross members , the front axle , the rear axle and four wheels A consists of B be made up of C include D reason 二把下面的表达式转化为中文或英文（20分） 1 邮车 mail van 6 sedan 轿车 2 赛车 racing car 7 bumper 保险杠 3 救护车 ambulance 8 lamp 灯 4 越野车 off -road vehicles 9 tire 轮胎 5 洒水车 sprinkler 10 hood 发动机罩 三把下面的简写正确搭配（10分） FWD electrical suspension control system TD Four -wheel drive AT anti -lock brake system ABS turbo diesel ESCS automatic transmission 四写出下面单词的全称及意思 (10分） 1 SUV 运动型多功能用车 sports utility vehicle
bar graph n.条形图 equalization n.均衡化;均等 image contrast n.图像对比度 addition n.加 subtraction n.减 lapse v.流逝, 失效, 下降 time-lapsed (时间上)相继的 matrix n.矩阵 motion n.运动, 动作v.运动 dimension n.维数 convolution n.回旋, 盘旋, 卷积boundary n.边界, 分界线 blur v.涂污, 污损, 使……模糊, sharp adj.锐利的, 锋利的, 明显的 locate v.定位, 位于 spectra n.范围, 光谱 spectrum n.光谱, 频谱 phase spectrum相位频谱 magnitude spectrum幅度频谱 facsimile n. 传真,摹写,影印 lossless compression（压缩）无损压缩lossy compression 有损压缩irretrievably adv.不能挽回地, 不能补救地CT (computed tomography) 计算机断层造影 MRI (Magnetic Resonance Imaging ) 核磁共振成像 DCT (discrete cosine transform)离散余弦变换 run-length encoding行程编码 Huffman encoding霍夫曼编码 Image contrast图像对比度Edge filter边缘滤波Edge detection边缘检测Object recognition目标识别 Run-length encoding行程编码Huffman encoding哈夫曼编码Pixel 像素 Gray scale image 灰度图像Gray scale level灰度级Histogram 直方图 Bar graph条形图Histogram equalization直方图均衡encryption program 加密程序deletion command 删除命令authorized user 授权的用户backup copy 备份的副本voltage surge 电涌，浪涌电压circuit breaker 断路器 electronic component 电子器件 data-entry error 数据输入错误electronic break-in 电路中断 power line 电力线，输电线EC:Electronic Commerce 电子商务Electronic Data Interchange (EDI)电子数据交换 Electronic Funds Transfer (EFT)电子资金转账 embedded system 嵌入式系统 radio frequency 射频 schematic原理图 capture记录,输入 building block模块,构件 EDA (Electronic Design Automation)电子设计自动化 HDL: Hardware Description Language 硬件描述语言 Full-custom IC（全定制集成电路）
英语四级考试真题及答案(卷一完整 版) 范文： Writing：家长角色 There are several possible reasons accountable for this phenomenon(中心句). To begin with, family in growing numbers has only one child; therefore, parents oftentimes focus all their attentions on that child and exert much pressure on him or her(原因一). Moreover, numerous parents intend to realize their unfulfilled dreams by letting their children learn what they failed to learn and apply for the college by which they failed to be accepted, because they have become richer and they believe that they have the power to make what they wanted and want come true now(原因二). For instance, my uncle used to be a poor man and his dream that one day he would become a violinist was broken because of lack of money. But he made a fortune by selling coals, and then forced his son, my younger brother to practice playing violin. My brother was a huge fan of sports, but now he has to play violin everyday unwillingly and ofter quarrels with their parents(举例：原来-然后-结局). To sum up, it is unreasonable for parents to control their children’s life(总结句). In order to help them grow happily
《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
2、The modern automatic transmission is by far the most complicated mechanical component in today’s automobile. 3、Torque that is produced at the end of the crankshaft by the engine must be transmitted to the driving wheels. 4、A double overhead cam engine has two cams per head. So in-line engines have two cams, and V-type engines have four. 5、所以冷却系统的另一个重要作用是让发动机尽快的升温，并保持在稳定的温度范围内。 .
三、Answer the following questions in English. (3×5’) 1、Why do we need the cooling system in an IEC （内燃机）? 2、What is the function of the braking system? 3、What ’s the displacement of an engine? 四、 Choose the right answer. (5×2’) 1、What do almost all cars use to convert gasoline into motion? A. one-stroke combustion cycle B. two-stroke combustion cycle C. three-stroke combustion cycle D. four-stroke combustion cycle 2、A car uses a four-stroke engine. The four strokes are . A. intake, compression, ignition and exhaust B. injection, rotation, ignition and exhaust C. injection, carburetion, rotation and exhaust 3、What is the core of a car ’s engine?
1.Types of Business Organization: 1)Sole Proprietorship :an unincorporated business owned by one person 2)Partnership :owned by two or more individuals (called partners) a)Limited partnership——general partners,limited partners 3)Corporation :a legal entity separate from its owners 2、Separation of Ownership and Control (pros and cons)： Pros(赞成的理由): Specialization，Efficiency，Diversify，Going concern Cons(反对的理由)：Four major downsides：agency problem,free-riding problem,increased costs of information https://www.doczj.com/doc/204384315.html,rmation asymmetry 3.Overview of Financial Statements balance sheet; income statement;statement of cash flows;statement of retained earnings 4. Statement of Retained Earnings,it shows: the retained earnings balance at the start of the period;how much the firm earned (net income); how much dividends the firm paid;how much net income was reinvested back into the firm (retained earnings);any repurchases of the firm’s stock;any new issues of the firm’s stock; andthe retained earnings balance at the close of the period. 4. Statement of Cash Flow:Operating Cash Flows ，Investing Cash Flows ，Financing Cash Flows 5.Analyzing Financial Ratios Financial ratios are not standardized. Analyzing a single financial ratio for a given year may not be very useful. Some of a firm’s financial accounting practices or choices will affect its financial statements and, finally, its financial ratios. Financial ratios do not provide analysts with all of th e answers about a firm’s condition. 7. Uses and Limitations of Financial Ratio Analysis：while ratio analysis can provide useful information concerning a company’s operations and financial condition, it does have limitations that necessitate care and judgment 1.Risk-return tradeoff Investors will take on additional risk only if they anticipate high return. 2.Time value of money A dollar available today is worth more than a dollar available at a future date. This is because a dollar today can be invested to earn a return. 3.Types of value Going-concern value,Liquidation value ,Book value ,Market value ，ntrinsic value 4.Valuation Approaches discounted cash flow (DCF) valuation，relative valuation，contingent claim valuation，option-pricing models 7.Contractual Provisions of a Typical Bond Par Value,and Coupon Rate,Maturity,Call Provisions,Sinking Fund Provisions,Conversion Rights ,Put Provisions,Indenture,Trustee,Collateral,Bond Rating 1.Introduction to Risk and Return All financial assets are expected to produce cash flows, and the risk of an asset is judged by the risk of its cash flows. Here are two assumptions about risk and return: Assumption (1): The returns from investments are normally distributed.Assumption (2): Investors are risk-averse. The risk of an asset can be considered in two ways: (1) on a stand-alone basis (2) in a portfolio context. In a portfolio context, an asset’s risk can be divided into two components: a,diversifiable risk ;b. market risk.An asset with a high degree of relevant (market) risk must provide a relatively high expected rate of return to attract investors. 4.Efficient Market Hypothesis (EMH) Assumption 1:The returns from investments are normally distributed.Assumption 2: Investors are risk-averse.Assumption3:Investorsare rational.Assumption4:Investors are price takers.Assumption 5: The Efficient Market Hypothesis (EMH) holds. 5. Three types of financial market efficiency: allocationally efficient, operationally efficient,informationally efficient 6. Three main factors associated with informational market efficiency The type of information to which the market price reacts,The speed at which the market price reacts to information,The degree to which market participants over-or under-react to information 8. Characteristics of an Informationally Efficient Market Price changes cannot be predicted. The price of the asset is equal to its fundamental (unobserved but true) value.Prices change due to the inflow of new information, and information flows randomly to the market.Therefore, price changes should be random and unpredictable. 10. Modern portfolio theory —Markowitz’s Mean-variance Framework ,Efficient portfolios are those that have: the lowest risk for an expected rate of return; or the highest expected rate of return for a given level of risk.The assets that meet these criteria make up the efficient frontier.
汽车专业英语大纲 Company number：【0089WT-8898YT-W8CCB-BUUT-202108】
《汽车专业英语》课程标准 学时/学分： 32/2 课程类型：理论课程（A类） 适用专业：汽车电子技术专业 课程所属系部：汽车工程系 批准日期：2014年5月 一、制定依据与课程定位 （一）制定依据 本课程标准是依据汽车检测与维修技术、汽车制造与装配技术、需要制定。 （二）课程定位 《汽车专业英语》这门课程是汽车专业的一门专业选修课程，旨在使学生掌握汽车专业常用的英语词汇。 通过本课程的学习，培养学生在汽车专业领域具有的一定的英语阅读能力和翻译能力，以便学生更好的直接从外文资料中获取新的知识和信息。 二、课程教学目标 《汽车专业英语》是三年制高职汽车检测与维修技术、汽车制造与装配技术、的专业选修课程。其任务是使学生一方面可以巩固已掌握的词汇和语法知识，另一方面扩大专业词汇量，提高学生对汽车专业英文文献的阅读能力。通过教学应使学生获得初步具备专业英语翻译能力和初步具备能够直接从外文资料中获取信息的能力。 （一）知识目标 1、掌握专业英语中的基本词汇和专有名词； 2、掌握专业英语中常用的语法和句型结构； 3、可以阅读有一定词汇量的专业英语文献。 （二）能力目标 通过对《汽车专业英语》的教学，力求向学生提供未来工作岗位所需要专业英语知识，培养学生在实际工作岗位上运用汽车专业英语的能力。
1、阐述“专业阅读”，内容力求反应汽车专业方面的最新知识，文章能展示当今汽车专业方面的最新技术，同时书中附带一些真实的现场照片。 2、阐述“专业术语”，帮助学生了解汽车各零部件的功能及应用，是学生进入企业后应用较多的内容。 3、阐述“试试您的动手能力”，以汽车故障诊断为主，列举大量贴近企业工作实际的实例。 4、阐述“交际会话”，选用贴近实际，贴近企业，贴近岗位的常用专业英语会话。 （三）素质目标 通过教学应使学生认识《汽车专业英语》学习的基本方法， 1、具备通过查阅资料等方法，通过自学获取知识和新技术的能力； 2、通过不同形式的探究活动、自主学习，体验科技发现和创造的历程，发展抽象思维和辨证逻辑思维。 3、养成严谨求实的科学态度以及质疑和独立思考的学习习惯。 4、使学生具备正确的价值观与评定事物的能力，具备一定的英文语言表达能力以及与人交往沟通的能力。 5、培养学生爱岗敬业、团结协作、吃苦耐劳的职业精神与创新设计的意识。 三、课程内容设计 （一）学时分配
给出定义： 1.Higher level language A high-level programming language is a programming language with strong abstraction from the details of the computer. In comparison to low-level programming languages, it may use natural language elements, be easier to use, or be from the specification of the program, making the process of developing a program simpler and more understandable with respect to a low-level language. 2.Stateful inspection is a firewall that keeps track of the state of network connections (such as TCP streams, UDP communication) traveling across it. The firewall is programmed to distinguish legitimate packets for different types of connections. Only packets matching a known active connection will be allowed by the firewall; others will be rejected. 3. Personal productivity software 4. Metropolitan area network(MAN) A metropolitan area network(MAN) is a computer network that usually spans a city or a large campus. A MAN usually interconnects a number of local area networks (LANs) using a high-capacity backbone technology, such as fiber-optical links, and provides up-link services to wide area networks (or WAN) and the Internet. 5. Network topology Network topology is the layout pattern of interconnections of the various elements (links, nodes, etc.) of a computer or biological network. In a word network topology is the topological structure of a network. Network topologies may be physical or logical. Physical topology refers to the physical design of a network including the devices, location and cable installation. Logical topology refers to how data is actually transferred in a network as opposed to its physical design. In general physical topology relates to a core network whereas logical topology relates to basic network 6. DBMS database management system (DBMS) is a software package with computer programs that control the creation, maintenance, and use of a database. It allows organizations to conveniently develop databases for various applications by database administrators (DBAs) and other specialists 简要回答问题： 1.Give the definition and examples about computer virus. （这题书上答案不全， 需要网上搜点答案，组织成答案） DE: A computer virus is a computer program that can replicate itself and spread from one computer to another. The term "virus" is also commonly, but erroneously, used to refer to other types of malware, including but not limited to adware and spyware programs that do not have a reproductive ability. EX: For example, the CIH virus, or Chernobyl Virus, computer worm. 2.Describe the hierarchy of data organization. Data organization involves fields, records, files and so on A data field holds a single fact. Consider a date field, e.g. "September 19, 2004". This can be treated as a single date field (e.g. birthdate), or 3 fields, namely, month, day of month and year.