?? ??400???????????????????
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2???????
3???????????
4?????
5???????????
??12??????????20??????????? (?????????????? ?????????)??20????????,??????????????????12??????19?,??????????????400.4????????,???????23%?
12????????????19?,????????????????? ????? ?????????????????,?,?????????????????????????????????,???????????
???,?????????,???????1????1????????????11??27??,????????????40????500.8????,??????????????????????????500?????????????,?????????????????????,???????????????????????????????????
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