?? ???????????????????2000?
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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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