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

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

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

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

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

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