南大2015年秋微观经济学第一次作业100分

2015年南开大学832经济学基础（微、宏观）考研真题一、简答题（每题5分，共40分）1．“家电行业的制造商发现，为了占有市场份额，他们不得不采取一些竞争策略，包括广告、售后服务、产品外形设计等，其竞争是很激烈的。

因此家电行业是完全竞争行业。

”请分析上述说法是否正确？2．对于一个追求利润最大化的竞争性厂商，如果他在长期均衡条件下获得正的利润，那么它是否能够拥有一种规模报酬不变的技术？请说明理由。

3．请问什么是占优策略均衡？什么是纳什均衡？他们之间有什么关系？4．和完全竞争相比，垄断可能从哪些方面促进经济效率？试举例说明。

5．请结合图形简要说明凯恩斯交叉模型、IS-LM模型和AD-AS模型这三个模型中的内在联系。

6．总供给曲线和菲利普斯曲线是看待同一宏观经济现象的两种不同方式，请简要说明其原因。

7．请简要说明为什么总供给曲线是向右上方倾斜而非垂直的？8．简要说明为什么自然失业率不为0？二、计算题（共70分）1．某垄断企业面对政府保护的国内市场和竞争激烈的国际市场这两个分割的市场，在国内市场，其产品的需求方程为p d＝120－q d/10，在国际市场上，其产品的需求方程为p c＝240－q c/10。

假设厂商的边际成本MC＝60＋Q/10，其中Q＝q d＋q c。

（1）求该生产厂商的最优产出和国内国际市场所占的份额。

（2）求在国内国际市场的价格与需求价格弹性。

（3）假如国内和国际市场合并为一个市场，这时总产出与价格是多少？2．一家钢铁厂，生产成本c（s，x）＝s2（θ－x）2＋s2。

有一家渔场，生产成本为c （f，x）＝f2x2，其中s为钢产量，f为鱼产量，x为污染排放量，θ为参数，求解：（1）可否对钢铁商征收税t达到社会最优化？可以的话，t是多少？不可以的话，请说明理由。

（2）若最大排污量为k，排污权可以自由买卖，问最大排污量是多少？3．已知市场上有N家成本一样的企业，单个厂商长期总成本函数为LTC＝q3－2q2＋6q，整个市场的需求曲线为Q＝20－2p。

题号:1 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:假设某人只购买两种商品X和Y，X的价格为10，Y的价格为20。

若他买了7个单位X和3个单位Y，所获得的边际效用值分别为30和20个单位，则A、他获得了最大效用B、他应当增加X的购买，减少Y的购买C、他应当增加Y的购买，减少X的购买D、他要想获得最大效用，需要借钱正确答案:B题号:2 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:政府为了扶持农业,对农产品规定了高于其均衡价格的支持价格,政府为了维持支持价格,应采取的相应措施是A、增加对农产品的税收B、实行农产品配给制C、收购过剩的农产品D、对农产品的生产者予以补贴正确答案:C题号:3 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:假定某商品的价格从3美元下降到2美元,需求量将从9单位增加到11单位,则该商品卖者的总收益将A、保持不变B、增加C、减少D、无法确定正确答案:C题号:4 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:已知某种商品的市场需求函数为D=30-P,供给函数为S=3P-10，则均衡价格为A、10B、20C、小于10D、大于20正确答案:A题号:5 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:如果某商品富有需求的价格弹性,则当该商品价格上升时,会有A、该商品的销售收益增加B、该商品的销售收益不变C、该商品的销售收益下降D、该商品的销售收益可能增加也可能下降正确答案:C题号:6 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:无差异曲线为斜率不变的直线时,表示相组合的两种商品是A、完全替代的B、互补的C、非关联性的商品D、两者都是低劣品正确答案:A题号:7 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2 内容:无差异曲线的任一点上商品X和Y的边际替代率等于它们的A、价格之比B、数量之比C、边际效用之比D、边际成本之比正确答案:C题号:8 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2 内容:小麦欠收会导致小麦价格上升,准确地说在这个过程中A、小麦供给的减少引起需求量下降B、小麦供给的减少引起需求下降C、小麦供给量的减少引起需求量下降D、小麦供给量的减少引起需求下降正确答案:A号:9 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:一个商品价格下降对其互补品最直接的影响是A、互补品的需求曲线向右移动B、互补品的需求曲线向左移动C、互补品的供给曲线向右移动D、互补品的价格上升正确答案:A题号:10 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2 内容:市场上某产品存在超额需求是由于A、产品价格超过均衡价格B、该产品质量好C、该产品供不应求D、该产品价格低于均衡价格正确答案:D题号:11 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2 内容:在需求和供给同时减少的情况下A、均衡价格和均衡产量都将下降B、均衡价格将下降而均衡产量的变化无法确定C、均衡价格的变化无法确定而均衡产量将减少D、均衡价格将上升而均衡产量将减少正确答案:C题号:12 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:无差异曲线的形状取决于A、消费者的偏好B、消费者的收入C、消费者所购商品的价格D、消费者所购商品能带来的效用水平的大小正确答案:A题号:13 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:建筑工人的工资提高将使A、新房子的供给曲线左移并使房子价格上升B、新房子的供给曲线右移并使房子价格下降C、新房子的需求曲线左移并使房子价格下降D、新房子的需求曲线右移并使房子价格上升正确答案:A题号:14 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:蛛网模型的假设前提是A、需求量变动存在时滞B、生产者按照本期的价格决定下一期的供给量C、需求量对价格缺乏弹性D、供给量对价格缺乏弹性正确答案:B题号:15 题型:单选题（请在以下几个选项中选择唯一正确答案）本题分数:2内容:总效用曲线达到顶点时A、边际效用曲线达到最大点B、边际效用为0C、边际效用为正值D、边际效用为负正确答案:B题号:16 题型:多选题（请在复选框中打勾，在以下几个选项中选择正确答案，答案可以是多个）本题分数:4内容:社会在其生产可能性曲线上选择一点所能回答的问题有A、如何生产B、生产什么C、为谁生产D、在此处可以有效率地进行生产E、生产条件不足正确答案:ABD题号:17 题型:多选题（请在复选框中打勾，在以下几个选项中选择正确答案，答案可以是多个）本题分数:4内容:关于等产量曲线，下列说法中正确的是（）。

第一章经济学十大原理测试开始时间：2019-08-09 23:57结束时间：2019-08-30 00:02满分：90发布人：刘红艳我的作业90分正确答案：true学生答案：true正确答案：true学生答案：true正确答案：true学生答案：true正确答案：true学生答案：true• A.有政府的干预• B.有先进的科技为支撑• C.有一只看不见的手• D.有一套管理经济的制度正确答案：C学生答案：C• A.发达国家的物价水平高• B.发达国家的税率高• C.发达国家工人的生产率高• D. 以上都不是正确答案：C学生答案：C• A.计划经济以计划为基础配置资源，市场经济以市场为基础配置资源• B.计划经济中有国有经济，市场经济中没有国有经济•• C.计划经济是按劳分配，市场经济是按资分配•• D. 计划经济适用于社会主义国家，市场经济适用于资本主义国家正确答案：A学生答案：A• A.符合社会道德标准• B.能给他人带来利益• C.使边际收益大于边际成本• D.使边际收益小于边际成本正确答案：C学生答案：C• A. 无法有效利用的• B.稀缺的• C.不能开发的• D.利用的边际成本是无限上升的正确答案：B学生答案：B第二章像经济学家一样思考测试关闭第二章像经济学家一样思考测试开始时间：2019-08-10 00:00结束时间：2019-08-30 00:05满分：100发布人：刘红艳我的作业100分正确答案：true学生答案：true正确答案：true学生答案：true正确答案：false学生答案：false正确答案：true学生答案：true• A.因为经济学家有不同的科学• B.因为经济学家有不同的价值观• C.实际上根本没有分歧，只是看起来有分歧• D.以上说法均不对正确答案：B学生答案：B• A.意见分歧是因为他们有不同的科学判断• B.意见分歧是因为他们有不同的价值观• C.实际上根本没有分歧，只是看起来有分歧• D.以上说法均不对•正确答案：A学生答案：A• A.减少失业救济金将降低失业率• B.失业率应该降低，一位失业剥夺了个人尊严• C.通货膨胀应该降低，因为通货膨胀剥夺了老年人的储蓄• D.国家应该增加对大学的补贴，因为经济的未来取决于教育正确答案：A学生答案：A• A.政府发行过多的货币就会引起通货膨胀• B.如果工资更高，人们会更努力工作• C.失业率应该降低• D.大量政府赤字使经济增长更慢正确答案：C学生答案：C• A. 资本存量的增加• B.技术进步• C.失业减少• D.劳动增加正确答案：C学生答案：C• A.有效率的• B.无效率的• C.不能达到的• D.规范的正确答案：A学生答案：A第三章相互依存于贸易的好处测试关闭第三章相互依存于贸易的好处测试开始时间：2019-08-10 00:01结束时间：2019-08-30 00:06满分：45发布人：刘红艳我的作业45分正确答案：true学生答案：true正确答案：false学生答案：false正确答案：true学生答案：true正确答案：false学生答案：false正确答案：false学生答案：false正确答案：false学生答案：false答案解析：正确答案：false学生答案：false答案解析：错。

15春福师《微观经济学》在线作业1-2一、单选题（共34 道试题，共68 分。

）V 1. 在完全竞争的条件下，如果厂商把产量调整到平均成本曲线最低点所对应的水平A. 他将取得最大利润B. 他没能获得最大利润C. 无法确定D. 一定亏损满分：2 分2. 2004年3月发生在西安6000万元即开型体育彩票案件，彩票承销商杨永明涂改彩票造假案，被国家体育总局和国家体彩中心定性为“恶劣的诈骗案”。

彩民在购买彩票后与承销商之间存在着：A. 信息不完全和信息不对称B. 完全信息C. 私人信息D. 公共信息满分：2 分3. 隐性成本通常与以下何种成本有关A. 机会成本B. 会计成本C. 生产成本D. 以上全不对满分：2 分4. 经济学研究的基本问题是（）A. 怎样生产B. 生产什么，生产多少C. 为谁生产D. 以上都包括满分：2 分5. 假设一种货物的供给完全没有弹性，对该货物征收1美元的税收将导致价格上升（）A. 不足1美元B. 1美元C. 超过1美元D. 0.5美元满分：2 分6. 某工人在工资率每小时2美元时挣80美元，每小时3美元时挣105美元，由此可以判定A. 收入效应起主要作用B. 替代效应起主要作用C. 收入效应和替代效应均未发生作用D. 上述三者都不对满分：2 分7. 下列哪一个不是垄断竞争的特征A. 企业数量很少B. 进出该行业容易C. 需求曲线向下倾斜D. 企业忽略其竞争对手的反应满分：2 分8. 效用达到最大时（）。

A. 边际效用为最大B. 边际效用为零C. 边际效用为正D. 边际效用为负满分：2 分9. 在完全竞争市场上，厂商对劳动的需求主要取决于A. 劳动的价格B. 劳动的边际生产力C. 劳动在生产中的重要性D. 以上全不对满分：2 分10. 资本这种生产要素的价格用（）表示A. 货币工资B. 利息率C. 利润D. 收益率满分：2 分11. 当LAC曲线下降时，LAC曲线切于SAC曲线的最低点（）。

微观经济学第一次在线作业（Microeconomics for the first timeonline homework）Which of the following first questions is not true about microeconomics and macroeconomics?Your answer: ASubject score: 0.5Score: 0.5Annotation: A is wrong, macroeconomics regards economic whole as the object of study, do not take large-scale industry as the research objectWhich of the following second questions is most likely to be studied by micro economists?Your answer: CSubject score: 0.5Score: 0.5Annotation: the employment problem in an industry is micro, and the other three are macroeconomic issues.The third point on the frontier of production possibilities is...Your answer: ASubject score: 0.5Score: 0.5Note: the point on the boundary of the production possibility is efficient, and the point in it indicates inefficiency.Fourth, if a linear demand curve is tangent to a curve type demand curve, then the demand price elasticity of the two curve at the point of tangency (...)Your answer: ASubject score: 0.5Score: 0.5Note: the price elasticity of demand for a given point depends on its coordinates and slope, whether in straight line or curve, the two factors are the same.Fifth, if the demand curve is a straight line downward to the right, the seller's total income when the price drops from high to lowYour answer: BSubject score: 0.5Note: because the price elasticity of demand on the demand curve is different, the top left point is elastic, so reduce the price when the total income increased, right below the point of lack of flexibility, so reduce the price to reduce total revenue.Sixth, if the price of one of the two goods changes when the price of one of these two goods increases or decreases at the same time, the price elasticity coefficient of the cross demand isYour answer: ASubject score: 0.5Score: 0.5Annotation: if the price of a commodity changes and the demand for two kinds of goods changes at the same time, the two goods are complementary goods, and the cross elasticity of the complementary goods is negative.Seventh, the market supply curve of a commodity is a straight line passing through the origin, and the price elasticity of its supplyYour answer: BSubject score: 0.5Annotation: supply price elasticity =P/Q[1/ (dP/dQ)]=1Eighth, in order to increase revenue, the government decided to levy taxes on the sellers according to the amount of sales. If the government wanted the tax burden to bear on the buyer and did not affect the volume of the transaction as much as possible, then the condition should be thatYour answer: CSubject score: 0.5Score: 0.5Note: the tax burden falls on the less elastic side, ifNinth, the failure of wheat leads to an increase in wheat prices, to be exact, in the processYour answer: ASubject score: 0.5Score: 0.5Note: wheat harvest, wheat supply reduction, the equilibrium quantity corresponding to the new intersection of the supply curve and the demand curve is reduced, it embodies the parallel move, reducing the supply of supply, equilibrium movement alongthe demand curve, demand reduction.The tenth item falls at the same time that both the demand level and the supply level decreaseYour answer: DSubject score: 0.5Score: 0.5Note: as you can see from the graph, the balanced output must be reduced and the price becomes uncertain.The shape of the eleventh - item indifference curve depends onYour answer: ASubject score: 0.5Score: 0.5Note: indifference curves represent consumer preferencesTwelfth, if an indifference curve is horizontal, this indicates that the consumer has reached saturation (X) measured by the cross axis and Y by a vertical axisYour answer: ASubject score: 0.5Score: 0.5Annotation: a horizontal indifference curve indicating that, regardless of the quantity of X products, the utility is the same to consumers. So, X goods are saturated for consumers.The thirteenth - item indifference curve assumes that the marginal rate of substitution of the goods X and Y equals theirYour answer: CSubject score: 0.5Score: 0.5Annotation: this formula can be obtained by definition.Fourteenth, as income and prices change, consumer equilibrium has changed. In the new equilibrium, the marginal utility of various goods is lower than the marginal utility of the original equilibriumYour answer: ASubject score: 0.5Score: 0.5Annotation: according to the law of diminishing marginal utility, the more the two goods consume, the lower the marginalutility, the greater the total utility of the consumer.The fifteenth question assumes that the price of X and Y has been fixed. When MRSXY> PX/PY, the consumer will meet the greatest satisfaction, he willYour answer: ASubject score: 0.5Score: 0.5Annotation: according to the formula, if increasing the consumption of X goods, the increase in marginal utility will be greater than the decrease in marginal utility resulting from the reduction of Y commodity consumption.Sixteenth, the rise in prices of normal items has led to a decrease in demandYour answer: CSubject score: 0.5Score: 0.5Comment: at this time, whether it is the substitution effect or the income effect, the consumption of this kind of goods is reduced by the consumers.The seventeenth question, when APL is positive, but increments,MPL isYour answer: DSubject score: 0.5Score: 0.5Annotation: according to figure, the relation between marginal production and average output, when the marginal production is greater than the average output, the average output increases progressively.In the eighteenth question, the following statement is wrongYour answer: BSubject score: 0.5Score: 0.5Annotation: according to the relation between marginal production and total output, the marginal production decreases, but the total output still increases as long as he is greater than zero.In the nineteenth question, what follows is correctYour answer: DSubject score: 0.5Score: 0.5Note: only the last answer is correct, diminishing marginal returns leads to diminishing marginal rate of substitution between the two elements.The twentieth question, when a manufacturer produces the minimum amount of production at a minimum cost, heYour answer: DSubject score: 0.5Score: 0.5Annotation: for example, a monopolistic manufacturer whose profit maximization point of production is less than the average cost of production at this time.Twenty-first, the short and long term division of economics depends onYour answer: DSubject score: 0.5Score: 0.5Annotation: in economics, in the short run, only the quantity of labor can be adjusted, and in the long run the quantity oflabor and capital can be adjusted.Which of the following statements is true of the twenty-second question?Your answer: BSubject score: 0.5Score: 0.5Note: continuous increase in production may occur at the beginning of decreasing costs, the opportunity cost of the University also includes the income of the work to be abandoned.Twenty-third, the long-term total cost curve is the product of all kindsYour answer: ASubject score: 0.5Score: 0.5Annotation: the trajectory of the lowest cost pointTwenty-fourth, when the law of diminishing returns takes effect, the TVC curveYour answer: DSubject score: 0.5Score: 0.5Annotation:The twenty-fifth problem is the line from the origin and the point of the TC curve, ACYour answer: BSubject score: 0.5Score: 0.5Annotation:In the twenty-sixth question, when the yield is 99 units, the total cost is equal to 995 yuan. When the output increases to A00 units, the average cost is equal to A0 yuan, so that the marginal cost isYour answer: BSubject score: 0.5Score: 0.5Annotation: the total income equals the sum of the marginal revenue, and the total income of 99 units is 1000 of the total income of 995100 units, so the marginal income of the 100thgoods is equal to 5.In the twenty-seventh question, what follows is correctYour answer: BSubject score: 0.5Score: 0.5Annotation: marginal cost increase and marginal revenue decrease are the same reason.Twenty-eighth, the private market is difficult to provide public goodsYour answer: DSubject score: 0.5Score: 0.5Note: a free rider is a public good that does not pay for him, so there is no private offerWhich of the following twenty-ninth questions is the potential solution to the problem of air pollution?Your answer: BSubject score: 0.5Score: 0.5Annotation: as long as the definition of property rights is clear, the externality can be solved through the marketThirtieth, a crowded toll road isYour answer: ASubject score: 0.5Score: 0.5Note: This is both competitive and exclusive, so it's personal.Thirty-first, when the market fails to allocate resources effectively, the ultimate source of the problem is usuallyYour answer: CSubject score: 0.5Score: 0.5Annotation: as long as the definition of property rights is clear, the externality can be solved through the marketThirty-second question, if the output of a competition enterprise doubled, its total incomeYour answer: BSubject score: 0.5Score: 0.5Note: total income = price * output, total competitive market price unchanged, so total revenue doubled.Thirty-third, in the long run, the supply curve of the competing firms is...Your answer: BSubject score: 0.5Score: 0.5Annotation: a fully competitive industry, in the long run, the price should be equal to the marginal cost,The price is higher than the average cost, so the supply curve should be a part of the marginal cost curve above the average cost curveThirty-fourth, if the input needed by production is limited and the industry expands, resulting in an increase in the cost of all firms on the market, then the long-run market supply curve for an item may beYour answer: CSubject score: 0.5Score: 0.5Annotation: as the factor supply is limited, as the demand for the product increases, the demand for this factor increases, the factor price rises, the product cost increases, and the supply curve tilts to the right.In the thirty-fifth question, in the long run equilibrium of the perfect competition market, what statement is wrong about the operating state of an enterprise?Your answer: BSubject score: 0.5Score: 0.5Note: marginal revenue equals marginal cost, and economic profit equals 0.Which of the following thirty-sixth questions is not true about price discrimination?Your answer: CSubject score: 0.5Score: 0.5Note: price discrimination adds to the welfare of consumersThe supply curve of the thirty-seventh question monopolist is Your answer: ESubject score: 0.5Score: 0.5Annotation: there is no supply curve in monopoly marketThirty-eighth, the price charged by the government to force natural monopolies is equal to its marginal costYour answer: DSubject score: 0.5Score: 0.5Annotation: because monopoly market has the characteristics of scale economy, average cost decreases, so marginal cost is less than average cost, and the firm loses according to marginal cost pricing.Thirty-ninth, if the marginal benefit is greater than the marginal cost, a monopolist shouldYour answer: ASubject score: 0.5Score: 0.5Annotation:The fortieth question is that if an oligopoly individual chooses to maximize the profit level of production, the price it collects isYour answer: BSubject score: 0.5Score: 0.5Note: the oligopoly market is between perfect competition and complete monopoly, and the output is less than the perfectly competitive market, but larger than the total monopoly market. The price is less than the total monopoly market, but larger than the perfectly competitive marketTotal score: 20Job Master notation:。

简答题（每小题10分，共100分）1.厂商利润最大化原则满足什么条件？为什么要满足这一条件？2.内在经济和内在不经济的含义及成因。

3.无差异曲线的含义和特征。

4.如果经济学家讨论的是“人们的收入差距大一点好些还是小一点好些”，试问这是属于实证经济学问题还是规范经济学问题?5.市场失灵的含义及成因。

6.解释需求定理和供给定理7.形成寡头市场的原因。

8. 产生规模经济的原因和产生规模不经济的原因。

8.一个企业主在考虑再雇佣一名工人时，在劳动的平均产量和边际产量中他更关心哪一个？为什么?10. 请说明为什么一段时间内消费的商品减少，其边际效用会增加。

作业答案1. 答：厂商利润最大化的条件是MR=MC。

从边际收益-边际成本分析法来看：MR与MC的交点E就是厂商实现利润最大化的均衡点，此时的产量Q便为最佳产量,如果厂商选择的产量小于Q，那么厂商处于MR>MC的阶段，这表明厂商每增加一个单位的产量所得到的收益大于其所付出的成本增量，权衡得失，厂商讲选择继续增加产量，以获得更多的利润。

但由于MR始终保持不变，MC不断增加，MR>MC的状况会逐渐转化成MR=MC。

相反，如果厂商选择的产量大于Q，那么厂商处于MR<MC的阶段，这表明厂商每增加一个单位的产量所得到的收益增量小于其所付出的成本增量。

权衡得失，厂商将不断减少产量，以增加利润。

但是由于MR始终保持不变，MC不断减少，MR<MC的状况便会逐渐转化为MR=MC。

由此可见，无论是增加产量还是减少产量，厂商始终都在寻找一个最优的产量点，只要厂商实现了这一最优产量，他便能够从产量的调整过程中，可能得到利润增加的全部好处，或可能避免利润减少带来的损失。

这个最优产量点便是MC=MR的均衡产量点。

我们还应注意到，在MR=MC的均衡点上，厂商可能是盈利的，也可能是亏损的。

如果厂商是盈利的，那么这时的产量所带来的利润一定是最大利润；如果厂商是亏损的，那么这时的产量所带来的亏损异地是最小的亏损。

1. 已知商品X的价格为1.5元，商品Y的价格为1元，如果消费者从这两种商品得到最大效用的时候商品Y的边际效用是30，那么商品X的边际效用应该是20304550本题分值： 4.0用户未作答标准答案： 452. 当总成本曲线的切线通过原点时，SAC最小等于SMC等于SAVC加上AFC以上都对本题分值： 4.0用户未作答标准答案：以上都对3. 实证经济学研究提高税率的结果是什么回答是否应该提高税率的问题是否应该减免某些人的税赋的问题是否应该增加政府支出的问题本题分值： 4.0用户未作答标准答案：提高税率的结果是什么4. 垄断竞争者的短期供给曲线无法定义SMC的递增部分SMC在AVC曲线以上的递增部分只有当要素价格为常数时才能定义本题分值： 4.0用户未作答标准答案：无法定义5. MC是TFC曲线的斜率TVC曲线的斜率而不是TC曲线的斜率TC曲线的斜率而不是TVC曲线的斜率TVC曲线的斜率同时是TC曲线的斜率本题分值： 4.0用户未作答标准答案： TVC曲线的斜率同时是TC曲线的斜率6. 下列判断哪一句是错的经济租金属于长期分析，而准租金属于短期分析经济租金是对某些特定要素而言，而经济利润则是对整个厂商来说的厂商存在经济利润，、则其要素存在经济租金一种要素在短期存在准租金，并不意味在长期中也存在经济利润本题分值： 4.0用户未作答标准答案：经济租金是对某些特定要素而言，而经济利润则是对整个厂商来说的7. 设需求的价格弹性为-2,现在的价格为P=100元,需求量为1000个，那么价格上升10元,需求量减少多少？100200300400本题分值： 4.0用户未作答标准答案： 2008. 微观经济学的中心是价值理论价格理论生产理论分配理论本题分值： 4.0用户未作答标准答案：价格理论9. 稀缺现象存在的主要原因是人贪得无厌各种物品的存量太少技术不发达都对本题分值： 4.0用户未作答标准答案：人贪得无厌10. 如果产品价格为10单位，目前增加1单位劳动的边际产品是2单位产品，那么，该厂商的边际产品价值等于10520100本题分值： 4.0用户未作答标准答案： 2011. 在两个人（a、b）、两种产品（x、y）的经济中，生产和交换的全面均衡发生在mrtxy=px/pya与b的mrsxy=px/py(mrsxy)a=(mrsxy)bmrtxy=(mrsxy)a=(mrsxy)b本题分值： 4.0用户未作答标准答案： mrtxy=(mrsxy)a=(mrsxy)b12. 设边际替代率MRS＝Y/X，I＝80，PX=2,PY=1，最优消费组合为(26.7，26.7)(15,50)(20,40)(25,50)本题分值： 4.0用户未作答标准答案： (20,40)13. 从长期来看，工会要求提高工资的斗争：使工资高于劳动力的价值使工资接近于劳动力的价值无法改变工资大大低于劳动力价值的状况本题分值： 4.0用户未作答标准答案：使工资接近于劳动力的价值14. 完全竞争的厂商的最优产出条件是MR=ACMR=MCMR-MC最小MR=MC且MC上升本题分值： 4.0用户未作答标准答案： MR=MC且MC上升15. 需求价格弹性系数是需求量与价格的比率价格变动的绝对值与需求量变动的绝对值的比卒需求量变动的比率与价格变动的比率的比率本题分值： 4.0用户未作答标准答案：需求量变动的比率与价格变动的比率的比率二判断题1. 无论哪个行业，企业的规模都是越大越好。