11????????50% ??????????????

????:????????:????

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

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

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

??????????,?????????????????,?,???????????,??????????????,????11??,??,????????????????(??????????????????????) ?????????????????:?????