题目内容：
垄断竞争的行业将不断有新企业进入，直到需求曲线刚好接触到（ ）
A. 边际成本曲线 B. 平均成本曲线
C. 边际收益曲线 D. 平均不变成本曲线
参考答案：
选择题：垄断竞争的行业将不断有新企业进入,直到需求曲线刚好接触到( )
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- 题目类型：选择题
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谈谈对失业类型及其失业成本的理解。
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