【简答题】
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（entry deterrence市场威慑）考虑下面一个动态博弈：首先，在一个市场上潜在的进入者选择是否进入，然后市场上的已有企业（在位者）选择是否与新企业展开竞争。在位者可能有两种类型，温柔型（左图）和残酷型（右图），回答下面问题。
<img src="https://nimg.ppkao.com/2018-05/wenxueying/2018052114115928221.png?sign=ab5688cbd2dea732830166a0fde9335a&t=62d2162c" />
已有企业为温柔型的概率至少多少时，新企业才愿意进入。”相关的问题
第2题
A、At least two years after the last entry B、At least one year after the last entry C、At least 90 days after the last entry D、At least 30 days after the last entry
第3题
A、At least two years after the last entry B、At least one year after the last entry C、At least 90 days after the last entry D、At least 30 days after the last entry
第4题
A、3 years after making the first entry B、2 years after the last entry C、3 months after last entry D、3 years after the last entry
第5题
A、erase the entry and rewrite it B、notify the ships officer-in-charge C、completely black it out and make the correct entry alongside D、draw a single line through the wrong entry and initial it
第6题
A、erase the entry and rewrite B、draw several lines through the entry，rewrite，and initial the correction C、completely black out the entry，rewrite，and initial the correction D、draw one line through the entry，rewrite，and initial the correction
第7题
A、erase the entry and rewrite B、draw several lines through the entry，rewrite，and initiate the correction C、completely black out the entry，rewrite，and initiate the correction D、draw one line through the entry，rewrite，and initiate the correction
第8题
A、A.3 years after making the first entry B、B.2 years after the last entry C、C.3 months after last entry D、D.3 years after the last entry
第9题
A、Cross out the error with a single line，and write the correct entry，then initial it B、Carefully and neatly erase the entry and rewrite it correctly C、Remove this page of the log book，and rewrite all entries on a clean page D、Blot out the error completely and rewrite the entry correctly
