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????:1????????:??????????100?
2?600??????
3???????????
4?????????
5?????????
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??? ????????????????????????:??????????????????,????,???????????????
??????????????????????????,????????????????????????,??,??
??????????????????? ?????????:??????,??????????????,????????????????2????????????????,????32.28?????????????
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??????????????,????????,??????,???????????????????,???????????????????,????????????,????????????,????
????????? ?????????????????????:??,????????????????,?????????3000??????????????????,??,????,4000?????????,????,????????
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