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Re:这道题真搞笑In Reply To:Re:这道题真搞笑 Posted by:ttmajiatt at 2008-08-21 12:10:24 单一公式没有问题。。。n-m+p，自己可以看成收支点。。。C在收支上平衡 你进货n元 。。。到自己手m-p 综上n-m+p Followed by: Post your reply here: |
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