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【单选题】
15世纪葡萄牙亨利王子对航海事业的贡献有()。A.
创办航海学校
B.
设立天文台、气象台，收集地理、气象、造船、航海、水文等方面的资料
C.
修建海港、码头、船坞，建造和维修远洋船只
D.
以上选项都对
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【判断题】duopoly in which two identical firms are engaged in Bertrand competition will not distort prices from their competitive levels.
A.
正确
B.
错误
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【单选题】In which of the following games is it clearly the case that the cooperative outcome of the game is good for the two players and good for society?
A.
Two guilty criminals have been captured by the police, and each prisoner decides whether to confess or to remain silent.
B.
Two airlines dominate air travel between City A and City B, and each airline decides whether to charge a “high” airfare or a “low” airfare.
C.
Two duopoly firms account for all of the production in a market, and each firm decides whether to produce a “high” amount of output or a “low” amount of output.
D.
Two oil companies own adjacent oil fields over a common pool of oil, and each company decides whether to drill one well or two wells.
【单选题】There are two types of markets in which firms face some competition yet are still able to have some control over the prices of their products. Those two types of market are
A.
monopolistic competition and oligopoly.
B.
duopoly and triopoly.
C.
perfect competition and monopolistic competition.
D.
duopoly and imperfect competition.
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