????:1???????:????qt?????

2?????????

3??????????

4???????

5???9295?

???????????????11?????30?? (???? ??)????30???????????????????,11?????????????????50%,??????????????????????0.2??,??????6?????????????50%?,???

???????,???????????,?0.3?????0.9???;????????;???????????????????????????????????????????

?????,11????,?????????????????????50%,??????????????????,????????????????,????60%?????,???????????????;????????52%??????????????,???????????????;?????????????????55%??????,?????????????????,???

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