题目内容

下列（）不属于垄断竞争企业短期均衡的情形。

A. 盈利
B. 利润为零
C. 亏损
D. 边际成本为零

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公开的串谋通常是被法律禁止的。（）

A. 对
B. 错

_____________________

A. It’s over there.
B. That’s all right.
C. Sorry to hear that.
D. It’s wonderful.

_______________

A. Here you are.
B. Yes, of course.
C. It doesn’t matter.
D. Thank you.

_____________

A. You’re right.
B) Here is my card.
C. It was great.
D. How are you?