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1??????????????????????15?????,???«??????????????????(???????????)??????»,????????????????????????????,????????????,?????????,???????????,??,???1??????????????????20???????????????????????????28?,??????????????

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????????,??????????????????????6000????,???626.84???,???????????205.8???????,???????????,????????,??????????????????74%??????65%,????????30%??34%?

???????????????????????,2000?????????2000-4000??4000-6000?10%?52%?108%?

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