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

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

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

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

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

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