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 (成大國企) 但我覺得他是要問PPC外移的原因 不是技術進步嗎?? (相同要素生產更多產量) 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 (中山財管) 我覺得能夠理解 但AVC也是上升的啊 如果沒說單選或複選是否該都選? (寫了一些題目後發現有時候題目會註明"複選"卻是單選 會沒標複選卻是負選) 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台大國企) 應為成本遞增產業 所以我選的是C 這樣想錯在哪? (也不知道為啥要選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 但我覺得沒有在效率生產點生產(P=MC) 也就是在AR>MR=MC處生產啊? 所以我選D 5. 若一獨佔者將其產品銷售至A&B兩個阻隔的市場，A市場之需求彈性為-0.8， B市場之需求彈性為-0.6，試問該獨佔者若依第三級差別取價則ＡＢ哪一市場之價格較高? 答案是A (交大管科) 利用反彈性定價原則會得到答案是A 但實際上帶數字進去算就會發現會是B 因為獨佔廠商應該只會在MR=MC>0的地方生產 也就是MR=P(1-1/|Ed|)要>0 如果彈性得絕對值<1 那就會得到負值 所以是題目的概念根本完全錯嗎? 或者能有更好的解釋 謝謝 6. 哪一個不是價格歧視? (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) 是因為大人的飛機餐跟小孩子不一樣嗎? 但同樣都是坐一個坐位啊? B選項是說牙醫對領失業金的人和一般人取價不同 嗎? 好怪的選項@@ 7. 假設遊樂場提供十項遊樂設施，消費者對該遊樂場設施的需求函數為P=100-10Q 並且玩透十項設施，如果該遊樂場收取門票四百元，並且前五項每項收費20元， 後五項每項收費10元，則消費者不願意買票進入該遊樂園玩，用經濟學原理說明原因 答案是因為門票的收取不能超過消費者剩餘 (92東海國貿) 這題如果要用圖示的話是畫出拗折的需求線嗎? 覺得畫不太出來 現在只能用需求函數算 若Q=10則P=0 CS=0.5*100*10=500 門票400+20*5+10*5>500 所以不買 這樣解釋好像沒用到CS的概念 有沒有更完善的解釋呢? 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) 這題我完全看不懂他將剩餘的燈泡丟棄是在怎樣的條件下 又是為啥要選A 麻煩解答了 再次謝謝你看完這篇文章<(_ _)> --

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