?? 11??????????????50% ????????
????:1??????:???????????
2???????
3??????100???
4???????????
5????????
?????11??30?? (?? ???????????????)????30??????????????,11?????50%,??0.2?????,???????????????6??50%?????,????????
??????????,??,????0.3??????????????????????0.9????;?;???????????????????????????????????????????????????????
???????????????,11????????,???????????????????50%,????????????????????????,??,??60%????,?????????????;????????????????52%?????,???;?????????????????????55%?,???????,????????????????
??????,???,???????????,??,????????????????????????????????,????????????11??,??????,??????????????????????????(?????????????????) ????:???????????????