?? ????????????20??????
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????:1???95?98???:???????
2???????????
3??????v
4??????
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%????????????????????
???????????????,??,????,??,???????????????,???(??) ???:????????????????