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

????:????200???????:??????

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

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

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

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