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

????:???:??777????????

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

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

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

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