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Chapter 14 练习题

Chapter 14 练习题
Chapter 14 练习题

第十四章练习题

I. Define the following terms (名词解释) :

1. Relationship marketing 4. TCN

2. Expatriate 5. “Master of destiny” philosophy

3. Local nationals 6. Separation allowance

II. Multiple Choice Questions (单项选择):

1.Assuming that the international marketer has produced the right product, initiated the

proper channel of distribution, and promoted goods and services correctly, the effort can fail badly if the international marketer fails to: (pick the best answer)

A. inform the host government of all its marketing objectives.

B. properly price the goods or services.

C. work through union representatives.

D. consider the environmental impact of its goods or services.

E. deliver the product to the correct place at the correct time.

2.In general, price decisions are viewed in two ways. Which of the following is one of those

ways?

A. pricing is often beyond the control of a company

B. pricing is more a phenomenon of luck than planning

C. pricing is an active instrument of accomplishing marketing objectives

D. pricing is a function of product decisions

E. pricing is a function of promotion decisions

3.The Ryan Group, an importing organization in New York, has just bought an excessive

amount of perfume from perfume manufacturer in Paris. Unknown to the perfume

manufacturer, The Ryan Group has sold 25 percent of its order to distributors in France that have been unable to purchase any products from the perfume manufacturer. Which of the following best describes the transaction that has just taken place?

A. black-listed importing

B. direct importing

C. circular importing

D. co-mingled importing

E. parallel importing

4.Another term for parallel importing is:

A. the black market.

B. manufacturer black-listing.

C. government piracy.

D. gray-market goods.

E. forwarded market.

5.If a company has as its objective to reach a market segment that is relatively price

insensitive and thus willing to pay a premium price for the value received, it will most likely use a pricing strategy called:

A. penetration pricing.

B. everyday low pricing.

C. value-based pricing.

D. skimming pricing.

E. oligopolistic pricing.

6.In most cases the reason that products which cost relatively little in one country cost more in

another is:

A. profiteering.

B. inadequate demand.

C. inelastic demand.

D. elastic demand.

E. the high costs of exporting.

7.What is the best way to describe international currencies relationship to one another?

A. all currencies are related to the dollar for contractual purposes

B. there is a stable standard in the world against which all other currencies are pegged

C. all major currencies are free floating relative to one another

D. the U.N. mandates currency valuation

E. the World Bank mandates currency valuation

8.When the value of the dollar is weak relative to the buyer's currency, companies generally

employ __________ pricing.

A. competition-based pricing

B. demand-based pricing

C. supply-based pricing

D. psychological pricing

E. cost-plus pricing

9.Which of the following is a way that a company can lower costs by shipping unassembled

goods to an FTZ in an importing country?

A. have components manufactured in several countries and ship directly to distributor for

assembly to lower manufacturing costs.

B. reduce total shipment quantity count by reassembling goods onboard ocean vessel to

reduce ocean transportation rates.

C. declare components as obsolete inventory with no market value to lower import duties.

D. tariffs may be lower because duties are typically assessed at a lower rate for unassembled

versus assembled goods.

E. ship smaller components by air carrier and larger components by ocean freight to reduce

overall transportation costs.

10.A foreign trade zone is an important method for controlling which of the following?

A. theft.

B. labor problems at home.

C. price escalation.

D. profiteering.

E. deflation.

11.Honda was accused of ____________ when it sold motorcycles in the United States below

the price of those same motorcycles sold in Japan.

A. predatory pricing

B. monopolistic pricing

C. dumping

D. piracy

E. stupidity

12.Assembly in the importing country is a way companies attempt to lower prices and avoid

dumping charges. These assembly plants are known as __________ plants.

A. anti-dumping

B. screwdriver

C. importing

D. exporting

E. free labor

13.Countertrade is often used by international marketers to gain entry into a country. PepsiCo

used this strategy when it agreed to:

A. offer a more lucrative contract than rival Coca-Cola.

B. to package its Russian products in red rather than blue packages.

C. exchange Pepsi syrup for Russian vodka.

D. pressures the U.S. government into giving PepsiCo an exclusive contract with Russia.

E. to merge with KFC and Taco Bell.

14.A _________ involves payment in goods and cash.

A. barter deal

B. compensation deal

C. counterpurchase

D. buy-back

E. opaque transaction

15.Which of the following is probably the most frequently used form of countertrade?

A. barter

B. compensation deal

C. counterpurchase

D. buy-back

E. subornation

16.Michael McDonald has sold machine lathes to a company in Mexico. In order to make his

sale, Mr. McDonald has agreed to accept 30 percent of the amount owed in finished goods made by the plant that bought the machine lathes. Which of the following countertrade options is Mr. McDonald using?

A. barter

B. compensation deal

C. counterpurchase

D. buy-back

E. subornation

17.Will's company uses countertrade as a marketing and pricing tool. His company has a

_______ countertrade strategy.

A. proactive

B. reactive

C. standard

D. nondescript

E. highly volatile

18.Which of the following pricing strategies led to what called a "tax war" between the U.S.

and Japan?

A. fixed-base pricing.

B. variable-cost pricing.

C. demand-based pricing.

D. premium pricing.

E. transfer pricing.

19.If a company is engaged in transfer pricing, it can avoid penalties imposed by the IRS if it

will enter into an agreement with the IRS called a(n):

A. a buy-back agreement.

B. lend-lease agreement.

C. Advanced Pricing Agreement.

D. Proactive Pricing Agreement.

E. a reciprocal agreement

20.When several Middle-Eastern oil companies worked together to form OPEC to control oil

sales, production, and revenues for all oil products coming out of the region, the group was called a:

A. cabal.

B. monopoly.

C. cartel.

D. production association.

E. vertical combine.

III. Fill in the Blanks Questions (填空题)

1.Parallel importing has also been called __________ marketing.

2.Restrictions on imports and high tariffs can lead to _________ imports.

3.If a company wished to maintain the high-quality image of a product, it would use

_____________ distribution to ensure that the objective was maintained.

4.When a firm is only concerned with marginal or incremental cost of producing goods to be

sold in overseas markets, it will most likely use _____________ pricing.

5.____________ is the added costs incurred as a result of exporting products from one

country to another.

IV. True/False Questions (判断题)

1. Setting the right price for a product can be the key to success or failure in the international marketplace. ( )

2. Companies that use pricing to achieve marketing objectives are engaged in static pricing. ( )

3. Parallel imports develop when importers buy products from more than one country. ( )

4. Exclusive distribution is often used to offset the effects of parallel importing. ( )

5. One of the necessary ingredients in a parallel importing scheme is to have a freight forwarder who is willing to provide fake bills of lading to the original manufacturer. ( )

6. In variable-cost pricing, the firm is concerned only with the marginal or incremental cost of producing goods to be sold in overseas markets. ( )

7. Full-cost pricing is a philosophy that insists one unit of a product is different from ensuing units and must, therefore, be priced differently. ( )

8. A company uses skimming pricing as an objective when it desires to reach a market segment that is relatively price insensitive and thus willing to pay a premium price for the value received. ( )

9. A good way to describe price escalation is to define the term as being the added costs incurred as a result of exporting products from one country to another. ( )

10. One of the export strategies that can be tried when the domestic currency is weak is to improve productivity and engage in vigorous cost reduction. ( )

11. One of the important reasons for manufacturing/assembling in a country's FTZ (free trade zone) is an attempt to reduce price escalation. ( )

12. Many global companies consider currency exchange rate swings to be a major pricing problem. ( )

13. n a free trade zone, payment of import duties is postponed until the prod uct leaves the free trade zone and enters the country. ( )

14. By shipping unassembled goods to a free trade zone in an importing country, a marketer can lower costs in a variety of ways. One of these ways is that import taxes are completely skipped by following such a practice. ( )

15. One way to define the concept of dumping is to say that excess capacity has been cleared from the books of a manufacturer. ( )

V. Essay Questions (问答题)

1.Explain the process called parallel importing.

2.List and briefly characterize the four forms of countertrade.

3.What are the benefits of transfer pricing?

4. A reasonable price for goods in the home market may more than double in the foreign

market. How does channel length and transportation costs contribute to the price increase?

5.Discuss the meaning of and nature of cartels. Are these groups beneficial or not? Create an

example to illustrate your stance.

工程热力学课后作业答案chapter4

工程热力学课后作业答案chapter4

1 p73 4-1 1kg 空气在可逆多变过程中吸热40kJ ,其容积增大为1102v v =,压力降低为8/12p p =,设比热为定值,求过程中内能的变化、膨胀功、轴功以及焓和熵的变化。 解:热力系是1kg 空气 过程特征:多变过程 ) 10/1ln()8/1ln()2/1ln()1/2ln(==v v p p n =0.9 因为 T c q n ?= 内能变化为 R c v 2 5= =717.5)/(K kg J ? v p c R c 5 727===1004.5)/(K kg J ? =n c ==--v v c n k n c 51=3587.5)/(K kg J ? n v v c qc T c u /=?=?=8×103 J 膨胀功:u q w ?-==32 ×103J 轴功:==nw w s 28.8 ×103J 焓变:u k T c h p ?=?=?=1.4×8=11.2 ×103J

2 熵变:1 2ln 12ln p p c v v c s v p +=?=0.82×103)/(K kg J ? 4-2 有1kg 空气、初始状态为MPa p 5.01=,1501=t ℃,进行下列过程: (1)可逆绝热膨胀到MPa p 1.02=; (2)不可逆绝热膨胀到MPa p 1.02=,K T 3002=; (3)可逆等温膨胀到MPa p 1.02=; (4)可逆多变膨胀到MPa p 1.02=,多变指数2=n ; 试求上述各过程中的膨胀功及熵的变化,并将各过程的相对位置画在同一张v p -图和s T -图上 解:热力系1kg 空气 (1) 膨胀功: ])12(1[111k k p p k RT w ---==111.9×103 J 熵变为0 (2))21(T T c u w v -=?-==88.3×103J 1 2ln 12ln p p R T T c s p -=?=116.8)/(K kg J ?

管理学原理Chapter4课后题答案复习进程

第三次作业 宋子瑶经济1503 41507663 2. 3.Describe in detail the six-step strategic management process. The strategy management process is a six-step process that encompasses strategy planning, implementation and evaluation. The first step is identifying the organization’ s current mission, goals and strategies. Every organization needs a mission-a statement of its purpose. Defining the mission forces managers to identify what it’ s in business to do. It’s also important for managers to identify the current goals and strategies for managers have a basis for assessing whether they need to be changed. The second step is doing an external analysis. Analyzing that environment is a critical step in the strategic management process. Once the managers’ve analyzed the environment, managers need to pinpoint opportunities that the organization can exploit and threats that it must counteract or buffer against. And opportunities are positive trends in the external environment and threats are negative trends. The third step is doing an internal analysis. The internal analysis provides important information about an organization’s specific resources and

Chapter1会计概论答案

第一章会计透视:会计信息及其使用者▓复习思考题 1.概述会计的性质。 会计是按照会计规范确认、计量、记录一个组织的经济活动,运用特定程序处理加工经济信息,并将处理结果传递给会计信息使用者的信息系统,是组织和总结经济活动信息的主要工具。 会计是一个信息系统,会计处理的各个环节的加工的对象是会计信息。会计信息实际上是一种广义的信息,包含三个层次: 其一,以货币化指标体现的财务信息,它是从动态、静态两个角度,对特定主体经济资源的数量(资产)、归属(负债、所有者权益)、运用效果(收益分配)、增减变化及其结果(财务状况变动及其结果)进行描述; 其二,非货币化的和非数量化的说明性信息,它们不仅仅是对主体的财务状况、经营成果等财务指标的基本说明,而且还包含了大量的主体所处的社会、文化、道德、法律等环境信息,这些信息对于使用者正确判断主体的经营能力、发展前景,往往起到至关重要的作用; 其三,其他用于主体内部管理的信息,这些信息常常由成本会计、管理会计以及内部审计人员提供,主要包括了短期(长期)决策信息、预算信息、责任中心要求及履行情况等情况,虽然与外部性较强的财务会计信息相比,它们更容易为人们所忽略,但在经济管理和财务信息质量控制方面,它们也起了不可低估的作用。不过,在当前的会计报告模式中,所反映的会计信息主要是前两个层次上的信息。 2.企业的获利能力是否为债权人的主要考虑因素? 债权人关心那些影响自己的债权能否得到按期偿还的因素。他们会对公司的获利能力及清偿能力感兴趣。债权人会从获利能力去衡量未来的现金流量,由于企业的获利能力与现金流量并不一定同步产生,所以对短期债权人来说,企业的获利能力不能成为债权人的主要考虑因素,但对相对长期的债权人来说获利能力应该是值得更加关注的因素。 3.财务报表中体现出来的会计信息用以满足不同使用群体的需求,但并不是所有的使用者都能得到相同的满足的。在实践中,外部财务报表使用者诸如股东、供应商、银行等是如何获得有关公司的财务信息的?若要同时满足不同类别的财务报表使用者的信息需求有什么困难? 首先,股东是公司法定的所有者,法律上财务报表是为其制作的。法律规定,公司必须定期编制并发布财务报表,为其股东公布财务信息,我国《公司法》对此也有明确的规定。 其次,供应商与公司是商业伙伴关系,不提供商业信用的供应商,由于是钱货两讫,可通过报媒和网络了解公司公开财务的财务信息,如果供应商对公司提供商业信用,供应商可要求企业提供一定的财务信息,但对这些财务信息的准确性、可靠性需要有一定的分析。

第4章 作业

Chapter4 homework 一、Select the best answer based on this couese ( 选择题). 1.The computer memory system refers to _________ A.RAM B. ROM C. Main memory D.Register , main memory, cache, external memory 2.If the word of memory is 16 bits, which the following answer is right? A. The address width is 16 bits B. The address width is related with 16 bits C.The address width is not related with 16 bits D. The address width is not less than 16 bits 3.The characteristics of internal memory compared to external memory A. Big capacity, high speed, low cost B. Big capacity, low speed, high cost C. small capacity, high speed, high cost D. small capacity, high speed, low cost 4.On address mapping of cache, any block of main memory can be mapped to any line of cache, it is ___________ . A. Associative Mapping B. Direct Mapping C. Set Associative Mapping D. Random Mapping 5. Cache’s write-through polity means write operation to main memory _______. A. as well as to cache B. only when the cache is replaced C. when the difference between cache and main memory is found D. only when direct mapping is used 6. Cache’s write-back polity means write operation to main memory ______________. A. as well as to cache B. only when the relative cache is replaced C. when the difference between cache and main memory is found D. only when using direct mapping 7. On address mapping of cache, the data in any block of main memory can be mapped to fixed line of cache, it is _________________. A. associative mapping B. direct mapping C. set associative mapping D. random mapping 8. On address mapping of cache, the data in any block of main memory can be mapped to fixed set any line(way) of cache, it is _________________. A. associative mapping B. direct mapping C. set associative mapping D. random mapping 9. Computer memory is organized into a hierarchy. At the highest level are the ___________. A. registers B. cache C. main memory D. external memory 10. On address mapping of cache, the data in any block of main memory can be mapped to __________ of cache, it is direct mapping . A. any line B. fixed line C. fixed set any line D. A and B 11. The characteristics of external memory compared to internal memory are _______ . A.Big capacity, high speed, low cost B. Big capacity, low speed, low cost C. small capacity, high speed, high cost D. small capacity, high speed, low cost 12. Write _____ policy can result in memory write bottle-neck. A. back B. through C. from D. to 13.A 16KByte cache has a line size of four 32-bit words, the number of line is . A 210 B 10 C 28 D 8 14. If the address-length of memory is 16 bits, which the following answer is NOT right ? . A.The addressable unit is 16 bits B.The addressing range is 216 C.The maxmum possible memory capacity is determined D.The addressable unit is not related with 16 bits 15. Suppose that the word from location X in memory can be mapped any line in the cache, this mapping function is called _____________. A. associative Mapping B. direct Mapping C. set Associative Mapping D. random Mapping 16. The simplest technique is called _____________.Using this technique, all write operations are made to main memory as well as to the cache. A. write-back B. write-through C. write-invalidate D. write-update

Chapter 4 练习题

第四章练习题 I. Define the following terms (名词解释) : 1. Culture 6. Factual knowledge 2. Cultural sensitivity 7. Interpretive knowledge 3. Linguistic distance 8. Cultural values 4. Strategy of unplanned change 9. Cultural borrowing 5. Social institutions 10. Material culture II. Multiple Choice Questions (单项选择): 1.__________ is pervasive in all marketing activities; the marketer's efforts actually become a part of the __________. A. Resistance; opposition to change B. Culture; fabric of culture C. Acceptance; new global context D. Public relations; culture E. Change; marketing strategy 2._____________ is the human-made part of human environment. A. Sociology B. Psychology C. Culture D. Reference groups E. Cohort groups 3.The sum total of knowledge, beliefs, art, morals, law, customs, and any other capabilities and habits acquired by humans as members of society is called: A. Sociology B. Psychology C. Culture D. Reference groups E. Cohort groups 4.When marketers first introduced the PDA to the American consumer they performed the role of being a(n) _____________ because the cultural impact of the product became

Kotler_Chapter5

Chapter 5 Consumer Markets and Consumer Buyer Behavior 1) ________ is never simple, yet understanding it is the essential task of marketing management. A) Brand personality B) Consumption pioneering C) Early adoption D) Consumer buying behavior E) Understanding the difference between primary and secondary data Answer: D Diff: 1 Page Ref: 135 Skill: Concept Objective: 5-1 2) The consumer market is made up of which of the following? A) individuals who acquire goods or services for personal consumption B) households that purchase goods or services for personal consumption C) businesses that purchase goods and services D) A and B E) all of the above Answer: D Diff: 2 Page Ref: 135 Skill: Concept Objective: 5-1 3) Economic, technological, and cultural forces are all ________ in the stimulus-response model of buyer behavior. A) buyer responses B) stimuli C) components of the buyer's decision process D) buyer characteristics E) buying attitudes Answer: B Diff: 2 Page Ref: 137 Skill: Concept Objective: 5-1

chapter11 语法

Chapter 11 Linguistics and Foreign Language Teaching ?Applied linguistics ?Krashen’s Input hypothesis ?i+1 principle ?Interlanguage ?Syllabus ?Contrastive analysis ?Error analysis ?Error/mistake 11.1 Applied linguistics ?Applied linguistics is an interdisciplinary field of study that identifies, investigates, and offers solutions to language-related real-life problems. ?Some of the academic fields related to applied linguistics are education, linguistics, psychology, anthropology, and sociology. Applied Linguistics应用语言学 语言学的一个分支,主要关心的是如何应用语言学理论、方法和成果来阐释其他领域遇到的语言问题。应用语言学发展最充分的分支是外语教学,有时这个名称似乎只指这个领域。但是近年来出现了好几个其他应用领域,包括语言故障的语言学分析(临床语言学)、母语教育中的语言使用(教育语言学)、词典学的发展、翻译、人工智能和风格学等。 ?应用语言学不但运用语言学知识,还利用社会学、心理学、人类学、信息论等方面的知识,并把这些理论和知识应用与实践方面,例如,语言教学大纲的设计、言语矫正、语言规划、问题学研究等等。 ?Applied linguistics –Theoretical views of language explicitly or implicitly inform the approaches and methods adopted in language teaching. –Linguistics, as the science of language, should be of fundamental importance for teachers of language. ?According to Jo McDonough, a teacher who is able to explain some linguistic features would have a stronger position than one who handles the argument by using authority –“it?s like that”, “it?s an exception”, or “it?s less formal”. 11.2 Linguistics and language learning ?Many language learning theories are proposed based on certain linguistic theories. –In fact, knowledge in linguistics lies at the root of understanding what language learners can learn, how they actually learn and what they learn ultimately. 2.1Grammar and language learning focus on form 语法形式中心 As a compromise between the “purely form-focused approaches” and the “purely meaning-focused” approaches, a recent movement called focus on form seems to take a more balanced view on the role of grammar in language learning. Focus on Form ?Although language learning should generally be meaning-focused and communication-oriented, it is still necessary and beneficial to focus on form occasionally. The definition of UG ?In linguistics, the theory of universal grammar holds that there are certain fundamental grammatical ideas which all humans possess, without having to learn them.

工程热力学课后作业标准答案chapter4

p73 4-1 1kg 空气在可逆多变过程中吸热40kJ ,其容积增大为1102v v =,压力降低为8/12p p =,设比热为定值,求过程中内能的变化、膨胀功、轴功以及焓和熵的变化。 解:热力系是1kg 空气 过程特征:多变过程 ) 10/1ln()8/1ln()2/1ln()1/2ln(==v v p p n =0.9 因为 T c q n ?= 内能变化为 R c v 2 5= =717.5)/(K kg J ? v p c R c 5 727===1004.5)/(K kg J ? =n c ==--v v c n k n c 51=3587.5)/(K kg J ? n v v c qc T c u /=?=?=8×103J 膨胀功:u q w ?-==32 ×103J 轴功:==nw w s 28.8 ×103J 焓变:u k T c h p ?=?=?=1.4×8=11.2 ×103J

熵变:1 2ln 12ln p p c v v c s v p +=?=0.82×103)/(K kg J ? 4-2 ?有1kg 空气、初始状态为MPa p 5.01=,1501=t ℃,进行下列过程: (1)可逆绝热膨胀到MPa p 1.02=; (2)不可逆绝热膨胀到MPa p 1.02=,K T 3002=; (3)可逆等温膨胀到MPa p 1.02=; (4)可逆多变膨胀到MPa p 1.02=,多变指数2=n ; 试求上述各过程中的膨胀功及熵的变化,并将各过程的相对位置画在同一张v p -图和s T -图上 解:热力系1kg 空气 (1) 膨胀功: ])12(1[111k k p p k RT w ---==111.9×103J 熵变为0 (2))21(T T c u w v -=?-==88.3×103J 1 2ln 12ln p p R T T c s p -=?=116.8)/(K kg J ?

电工测量试题汇总.doc

《电工测量》精选试题一 判断:(50小题,每小题1分,共50分) 1.电工指示仪表准确度的数字越小,表示仪表的准确度越低。( ) 2. 44C2-A表示便携式磁电系直流电流表。() 3. T19-A表示安装式电磁系电流表。( ) 4. 一般情况下,测量结果的准确度不会等于仪表的准确度。( ) 5. 工程中, 一般采用相对误差来反映仪表的准确程度。( ) 6. 仪表的准确度越高,测量结果也一定越准确。() 7. 仪表的准确度越高越好。( ) 8. 选择仪表时, 要求其有足够的过载能力。( ) 9. 比较测量法的优点是方法简便,读数迅速。( ) 10. 电动势是标准电池的复制体。( ) 11. 标准度量器的准确度比基准度量器的低。( ) 12. 消除系统误差的方法是采用正负误差补偿法。( ) 13. 造成系统误差的原因主要是操作者粗心大意。( ) 14. 测量误差分为基本误差和附加误差。( ) 15. 电工指示仪表的测量机构必须由转动力矩装置,反作用力矩装置,读数装置和支承装置组成。( ) 16. 便携式电工指示仪表多采用矛形指针, 以利于准确读数。( ) 17. 电工指示仪表中的反作用力矩装置一般采用游丝和张丝构成。() 18. 磁电系测量机构的固定部分是磁路系统。( ) 19. 磁电系测量机构中的铝线框可用来产生阻尼力矩。( ) 20. 磁电系仪表的准确度高, 灵敏度低。( ) 21. 要使电流表量程扩大n倍, 所并联的分流电阻应为测量机构内阻的(n-1) 。 ( ) 22. 磁电系测量机构与分压电阻并联就组成直流电压表。( ) 23. 当被测电流超过30A时, 分流电阻一般安装在电流表的外部。( ) 24. 多量程直流电流表的量程低于600V时,可采用内附式分压电阻。( ) 25. 磁电系检流计的特点是准确度和灵敏度都很高。( ) 26. 灵敏度高的磁电系电流表就是磁电系检流计。( ) 27.检流计应放置在干燥、无尘、无振动的场所使用或保存。() 28. 电磁系电流表的刻度是均匀的。( ) 29. 电磁系测量机构中游丝的作用一是产生反作用力矩, 二是引导电流。 ( ) 30. 便携式电磁系电流表一般是单量程的。( ) 31. 电磁系电流表是采用并联分流电阻的方法来扩大量程的。( ) 32.安装式电磁系电流表的最大量程不得超过20A。() 33. 电压互感器的一次侧、二次侧都必须可靠接地。() 34. 一般来说,电流互感器一次侧的匝数都比二次侧匝数少得多。() 35. 用钳形电流表测量电流时,不必切断被测电路, 所以非常方便。( ) 36. 钳形电流表只能测量交流电流。( ) 37. 电磁系钳形电流表可以测量运行中的绕线式异步电动机的转子电流。 ( )

chapter4存储器管理(答案)

1.多进程能在主存中彼此互不干扰的环境下运行,操作系统是通过B来实现的。 A.内存分配 B.内存保护 C.内存扩充 D.地址映射 2.动态重定位是在作业的中进行的。 A.编译过程 B.装入过程 C.连接过程 D.执行过程 3.在可变式分区分配方案中,某一作业完成后,系统收回其主存空间,并与相邻空闲区合并,为此需修改空闲表,造成空闲数减1的情况是D。 A.无上邻空闲区,也无下邻空闲区 B.有上邻空闲区,但无下邻空闲区 C.有下邻空闲区,但无上邻空闲区 D.有上邻空闲区,也有下邻空闲区 4.什么叫重定位?采用内存分区管理时,如何实现程序运行时的动态重定位?查课本 那么,逻辑地址(2,88)对应的物理地址是178,逻辑地址(4,100)对应的物理地址是产生越界中断。 6.最佳适应算法的空白区是B。 A.按大小递减顺序排列 B.按大小递增顺序排列 C.按地址由小到大排列 D.按地址由大到小排列 7.某页式存储管理系统中,地址寄存器长度为24位,其中页号占14位,则主存的分块大小应该是A字节,程序最多占有D页。 A.210 B.10 C.14 D.214 E.24 F.224 8.设有8页的逻辑空间,每页有1024字节,它们被映射到32块的物理存储区中。那么,逻辑地址的有效位是13位,物理地址至少是15位。 9.外部碎片出现在D。 A.固定分区分配 B.分页存储系统 C.段页式存储系统 D.动态分区分配 E.段式存储系统 10.在采用页式存储管理的系统中,某作业J(或某进程P)的逻辑地址空间位4页(每页2048字节),且已知该作业的页面映像表(即页表)如下表所示。 11位的页表索引和12位的页偏移量。请问:页面长度是多少?在虚地址空间中最多有多少页面(均要求具体的数值)?页面长度:212,虚拟地址空间中最多有211个页面 12.在存储器的可变分区管理中,作业装入内存时,采用的是静态重定位方式。 13.(2002,华中科技大学)某操作系统采用分区存储管理技术。操作系统在低地址占用了100KB的空间,用户区主存从100KB处开始占用512KB。初始时,用户区全部为空闲,分配时截取空闲区的低地址部分作为已分配区。在执行了如下申请、释放操作序列后:

Chapter 4 财务管理(英语)作业

Chapter 4 Time Value of Money: Valuing Cash Flow Streams 14. Perpetuities The British government has a consol bond outstanding paying £1,000 per year forever. Assume the current interest rate is 8% per year. a. What is the value of the bond immediately after a payment is made? Answer: p = C/r = 1000 / 8% = £ 12500 b. What is the value of the bond immediately before a payment is made? Answer: p = 1000/8%+1000 = £ 13500 *18. Annuities When you purchased your car, you took out a five-year annual-payment loan with an interest rate of 6% per year. The annual payment on the car is $5000. You have just made a payment and have now decided to pay off the loan by repaying the outstanding balance. What is the payoff amount for the following scenarios? You have owned the car for one year (so there are four years left on the loan)? Answer: Present value of an annuity: PV=C*(1/r)(1-1/(1+r)^n)=$5000*(1/0.06)(1-(1/1.06)^4)=17325.53 b. You have owned the car for four years (so there is one year left on the loan)? Answer: PV=$5000*(1/0.06)(0.06/1.06)=$4716.98 26. Growing Cash Flows You work for a pharmaceutical company that has developed a new drug. The patent on the drug will last 17 years. You expect that the drug’s profits will be $2 million in its first year and that this amount will grow at a rate of 5% per year for the next 17 years. Once the patent expires, other pharmaceutical companies will be able to produce the same drug and competition will likely drive profits to zero.What is the present value of the new drug if the interest rate is 10% per year? Answer: Present value of a growing annuity: pv=c*(1/r-g)(1-(1+g/1+r)^n)=2*(1/0.05)(1-(1.05/1.10)^17)=$21.861million *35. You are saving for retirement. To live comfortably, you decide you will need to save $2 million by the time you are 65. Today is your 22nd birthday, and you decide, starting today and continuing on every birthday up to and including your 65th birthday, that you will put the same amount into a savings account. If the interest rate is 5%, how much must you set aside each year to ensure that you will have $2 million in the account on your 65th birthday? Answer: $2 billion=FV(annuity)=c*(1/0.05)(1.05^44-1)=c*(7.56/0.05) Therefore, C=$13233 Thus, I need to save $13233 each year.

chapter-9-作业参考答案

第9章作业参考答案P233 4. 25℃时,下列电池的电动势为0.518 V(忽略液接电位): Pt | H2(100 kPa),HA(0.01 mol·L-1),A-(0.01 mol·L-1) || SCE 计算弱酸HA的K a值。 解电池组成为 Pt | H2(100 kPa),HA(0.01 mol·L-1),A-(0.01 mol·L-1) || SCE E = φ(+) - φ(-)= φSCE– 而= 0.059lg[H+] 故E - φSCE = -0.059lg[H+],0.518 – 0.244 = -0.059lg[H+] [H+] = 2.29×10-5 mol·L-1 根据pH = p K a + lg 有pH = p K a,即K a = [H+] = 2.29×10-5 mol·L-1 6. 测得下列电池电动势为0.873 V(25 ℃) Cd | Cd(CN)42- (0.08 mol·L-1) CN- (0.100 mol·L-1) || SHE 试计算Cd(CN)42-的稳定常数。 解电池组成为 Cd | Cd(CN)42- (0.08 mol·L-1) CN- (0.100 mol·L-1) || SHE E = φ(+) - φ(-)= φSHE– 而=+ 根据K稳= 有0.873 V = 0.403 V – K稳=7.1×1018

11. 20.00 mL 0.1000 mol·L-1 Fe2+溶液在1 mol·L-1 H2SO4溶液中,用0.1000 mol·L-1 Ce4+溶液滴定,用Pt(+),SCE(-)组成电池,测得电池电动势为0.50 V。此时已加入多少毫升滴定剂? 解E = φ(+) - φ(-) = - φSCE = + - φSCE 0.50 = 0.68 + – 0.244 = 12 根据反应:Fe2+ + Ce4+ = Fe3+ + Ce3+,1 mol Fe2+与1 mol Ce4+反应 根据[Fe3+]/[Fe2+] = 12和nFe2+ + nFe3+ = 20 mL×0.100 mol·L-1 得:nFe3+ = 18.46×10-4 mol即有相当量的Ce4+加入 则加入Ce4+的体积为18.46×10-4 mol/0.100 mol·L-1 = 18.46 mL

工程热力学课后作业答案chapter4

p73 4-1 1kg 空气在可逆多变过程中吸热40kJ ,其容积增大为 1102v v =,压力降低为8/12p p =,设比热为定值,求过程中内能 的变化、膨胀功、轴功以及焓和熵的变化。 解:热力系是1kg 空气 过程特征:多变过程 ) 10/1ln()8/1ln() 2/1ln()1/2ln(= = v v p p n =0.9 因为 T c q n ?= 内能变化为 R c v 25==717.5)/(K kg J ? v p c R c 5 727= = =1004.5)/(K kg J ? =n c = =--v v c n k n c 51 =3587.5)/(K kg J ? n v v c qc T c u /=?=?=8×103J 膨胀功:u q w ?-==32 ×103J 轴功:==nw w s 28.8 ×103J 焓变:u k T c h p ?=?=?=1.4×8=11.2 ×103J

熵变:1 2ln 1 2ln p p c v v c s v p +=?=0.82×103)/(K kg J ? 4-2 有1kg 空气、初始状态为MPa p 5.01=,1501=t ℃,进行下列过程: (1)可逆绝热膨胀到MPa p 1.02=; (2)不可逆绝热膨胀到MPa p 1.02=,K T 3002=; (3)可逆等温膨胀到MPa p 1.02=; (4)可逆多变膨胀到MPa p 1.02=,多变指数2 =n ; 试求上述各过程中的膨胀功及熵的变化,并将各过程的相对位置画在同一张v p -图和s T -图上 解:热力系1kg 空气 (1) 膨胀功: ]) 1 2( 1[1 11 k k p p k RT w ---= =111.9×10 3 J 熵变为0 (2))21(T T c u w v -=?-==88.3×10 3 J 1 2ln 1 2ln p p R T T c s p -=?=116.8)/(K kg J ?

(完整版)电工仪表与测量基本知识

电工仪表与测量基本知识 电工仪表和电工测量是从事电工专业的技术人员必须掌握的一门知识。本章介绍电工测量和电工仪表的基本知识。 第一节电工测量基本知识 一、电工测量的意义 电工测量就是借助于测量设备,把未知的电量或磁量与作为测量单位的同类标准电量或标准磁量进行比较,从而确定这个未知电量或磁量(包括数值和单位)的过程。 一个完整的测量过程,通常包含如下几个方面: 1、测量对象 电工测量的对象主要是反映电和磁特征的物理量,如电流(I)、电压(V)、电功率(P)、电能(W)以及磁感应强度(B)等;反映电路特征的物理量,如电阻(R)、电容(C)、电感(L)等;反映电和磁变化规律的非电量,如频率(f)、相位(φ)、功率因数(cosφ)等。 2、测量方式和测量方法 根据测量的目的和被测量的性质,可选择不同的测量方式和不同的测量方法(详见本节二)。 3、测量设备 对被测量与标准量进行比较的测量设备,包括测量仪器和作为测量单位参与测量的度量器。进行电量或磁量测量所需的仪器仪表,统称电工仪表。电工仪表是根据被测电量或磁量的性质,按照一定原理构成的。电工测量中使用的标准电量或磁量是电量或磁量测量单位的复制体,称为电学度量器。电学度量器是电气测量设备的重要组成部分,它不仅作为标准量参与测量过程,而且是维持电磁学单位统一,保证量值准确传递的器具。电工测量中常用的电学度量器有标准电池。标准电阻、标准电容和标准电感等。 除以上三个主要方面外,测量过程中还必须建立测量设备所必须的工作条件;慎重地进行操作,认真记录测量数据;并考虑测量条件的实际情况进行数据处理,以确定测量结果和测量误差。 二、测量方式和测量方法的分类 1、测量方式的分类 测量方式主要有如下两种: (1)直接测量在测量过程中,能够直接将被测量与同类标准量进行比较,或能够直接用事先刻度好的测量仪器对被测量进行测量,从而直接获得被测量的数值的测量方式称为直接测量。例如,用电压表测量电压、用电度表测量电能以及用直流电桥测量电阻等都是直接测量。直接测量方式广泛应用于工程测量中。 (2)间接测量当被测量由于某种原因不能直接测量时,可以通过直接测量与被测量有一定函数关系的物理量,然后按函数关系计算出被测量的数值,这种间接获得测量结果的方式称为间接测量。例如,用伏安法测量电阻,是利用电压表和电流表分别测量出电阻两端的电压和通过该电阻的电流,然后根据欧姆定律R=U/I计算出被测电阻R的大小。间接测量方式广泛应用于科研、实验室及工程测量中。 2、测量方法的分类 在测量过程中,作为测量单位的度量器可以直接参与也可以间接参与。根据度量器参与测量过程的方式,可以把测量方法分为直读法和比较法。

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