题海让大学四年没有难题
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题目详情

单选题 Average variable cost and average total costs get closer together as output increases because

A. diminishing returns set in

B. average fixed costs decrease as output increases

C. marginal costs decrease as output increases

D. economies of scale become apparent

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学科:微观经济学

时间:2023-12-16 10:34:54

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