????????1.7??????????? ???2.6??

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???????,????????1.7?,??6.3?????????????1?????10????????,?????????????????????????????????????????????????????????????2.6?????

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?,????????????????“??”?,????????????1000???????????????????????????????,????,??“???????????????????????”????,??????????

?,??????,?“??”?????????“???”???????????,?????

????? ????:??????????????28.6????,??700???,??????????????8500??,??12???????????????(??????????????????) ??????????????:??????????