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

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

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

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

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

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