????:1???????:?????

2????????

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4???????

5???????500?4???

????11????????????????????25???????????? (?????????? ???????????????)????????????????????25???????????????3??????????10?????,??????????

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??10????,??,???????????,??????????

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????????????????????50%,??????????????500?????????60%,?????“???”?????????????????????????????????????????,???????????

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????????????,?????????????????????48%?????,??5.42?;60%????????????????????,???????15.26?????(???) ??????????????:?????????