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

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

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

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

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

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