??????? ????????2.2???????

????:?????????:???????????

????????????????????1??7????????? (?????????????? ?? ??)???????????7???????????,??????????????6.8????,?????????????????????????????????????????????????????2.2?????????????????

?,1????????????????7???9????5???,????(??28.50?????,?????87.45????????????)??6.8?,??10?????,???

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??1500??

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