1. The opportunity cost of pushing the production possibility frontier outward is (A)the value of the increase in new capital resources required. (B)the value of the increase in technical improvement required. (C)the value of the reduction in current consuption required. (D)the amount by which the production possibility frontier shifts. 答案是C (成大国企) 但我觉得他是要问PPC外移的原因 不是技术进步吗?? (相同要素生产更多产量) 2. As long as the firm is not operating efficiently, which cost always increases with increases in output? (A)MC (B)AFC (C)TFC (D)AVC (E)TVC 答案是E (中山财管) 我觉得能够理解 但AVC也是上升的啊 如果没说单选或复选是否该都选? (写了一些题目後发现有时候题目会注明"复选"却是单选 会没标复选却是负选) 3. The long run supply curve is likely to slpe upward if: (A)additinal firms are attended into the industry in the long run. (B)not all firms have the same cost of production. (C)diminishing marginal product sets in. (D)there are no barriers to entry in the industry. (E)economies of scale exists. 答案是A (93台大国企) 应为成本递增产业 所以我选的是C 这样想错在哪? (也不知道为啥要选A) 4. A monopolist does not produce the product as efficiently as is possible because (A)the average total cost of producing it is not a minimum. (B)the marginal cost of producing it is not a minimum. (C)it is earning a profit. (D)AR is greater than the cost of producing an extra unit of output. 答案是A 但我觉得没有在效率生产点生产(P=MC) 也就是在AR>MR=MC处生产啊? 所以我选D 5. 若一独占者将其产品销售至A&B两个阻隔的市场，A市场之需求弹性为-0.8， B市场之需求弹性为-0.6，试问该独占者若依第三级差别取价则ＡＢ哪一市场之价格较高? 答案是A (交大管科) 利用反弹性定价原则会得到答案是A 但实际上带数字进去算就会发现会是B 因为独占厂商应该只会在MR=MC>0的地方生产 也就是MR=P(1-1/|Ed|)要>0 如果弹性得绝对值<1 那就会得到负值 所以是题目的概念根本完全错吗? 或者能有更好的解释 谢谢 6. 哪一个不是价格歧视? (A)airline charging different fares for adults and children. (B)dentists charging different fees for unemployment benefis recipients and other person. 答案是A (中正企管) 是因为大人的飞机餐跟小孩子不一样吗? 但同样都是坐一个坐位啊? B选项是说牙医对领失业金的人和一般人取价不同 吗? 好怪的选项@@ 7. 假设游乐场提供十项游乐设施，消费者对该游乐场设施的需求函数为P=100-10Q 并且玩透十项设施，如果该游乐场收取门票四百元，并且前五项每项收费20元， 後五项每项收费10元，则消费者不愿意买票进入该游乐园玩，用经济学原理说明原因 答案是因为门票的收取不能超过消费者剩余 (92东海国贸) 这题如果要用图示的话是画出拗折的需求线吗? 觉得画不太出来 现在只能用需求函数算 若Q=10则P=0 CS=0.5*100*10=500 门票400+20*5+10*5>500 所以不买 这样解释好像没用到CS的概念 有没有更完善的解释呢? 8. Thomas Edison once said that he began making real profit on light bulbs when he dumped his surplus on the European market at less than the "cost of production". From this we can deduce: (A)Edison was crazy and did not want to maximize profit. (B)Edison understood the difference between marginal and average cost. (C)Edison had a peculiar definition of the term "profit" (D)Edison did not understand the difference between fixed and variable cost. 答案是A (90交大科管) 这题我完全看不懂他将剩余的灯泡丢弃是在怎样的条件下 又是为啥要选A 麻烦解答了 再次谢谢你看完这篇文章<(_ _)> --

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