试题与答案

In a monopoly industry, a firm is most lik

题型:单项选择题

题目:

In a monopoly industry, a firm is most likely to earn an economic profit in:()

A. short-run equilibrium only.

B. long-run equilibrium only.

C. both short-run and long-run equilibrium.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:A解析:我国劳动卫生标准《工业企业设计卫生标准》均采用最高容许浓度。

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