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

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

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

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

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

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