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【单选题】
In a market that allows free entry and exit, the process of entry and exit ends when, for the typical firm in the market,A.
profit is zero.
B.
total revenue is equal to average total cost.
C.
average revenue exceeds marginal cost.
D.
All of the above are correct.
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皮皮学刷刷变学霸
举一反三
【简答题】{x∈N∣3
【简答题】冯谖为孟尝君凿了哪几个窟?
【单选题】______ by the look on her face, she didn't catch what I meant.
A.
Judging
B.
Judged
C.
Judge
D.
To judge
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