以下是引用ray168168在2008-6-11 2:11:00的发言：mmm... for monopolistic competition short run - possible economic profits long run - new firms enter -> zero economic profits so it depends whether it was asking abt the long run or the short run i remember that i picked "no" to both ie. it could be asking abt the long run impact does anyone remember?
这题问的是谁有power control price, 好像是上午的题吧, 我觉得考的就是基本概念monopolistic是yes,perfect competition是no, 没必要想这么多,老外脑子转不了那么多弯 | 
发表于 2008-6-16 01:42
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