?? ??400???????????????????
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2???????
3???92???
4????????
5???????
??12?????????????20? (?????????????????????????? ????)??20????,???????12????????????19???????????????,???????400.4????????????????,???23%?
12??19?????,?????????? ??? ??????????????,??,?????????,????????????????????????????
?,?????????????????,??1??????????1???11???27??,??????????????40??????????????500.8???,?500???????,??????????????????????????????????????,????????????????????????????????????????????????????
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