?? ????????????20??????
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????:1??????????????:????????
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3??????QQ
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5????????
?????8???????31???? (????? ??????????????????????)??????????????????????8??????31?????????????,8??50.3%,???????????????20???50%??,??????????????????
???????????????????,????,????0.6??0.1??????;???????????????????????????????????,??0.3????????2??????????????
????,8?????????????????,??50.3%,??20??50%???????????????,??????????????????????????????????????50%?????,??????
?????,?????????????8????????,?????50.2%,??????????????0.2?????,?????????????????????,??????????,??????????????????
?????,???????????????????,?????????????????????????????????????55%??????;????????????????,??,???????60%????
??,?,???????????????????,?,?????????????????????????????,???(??????) ????????:????