?? 11????????50% ??????????????
????:1???????qq?:????
2??????????
3?????90????????
4??????3000?
5???????????
??????????????????????11??????????30????? (?? ???????????????????)??30????,11?????????????????????????50%,???0.2??,?????6?????50%????,?????????
????????????????,?????,??0.3??0.9??????;???;????????????????????????????????????????????
??????????????,11????,???????????50%,???????????????????,??,???60%????,?????;???????????????52%???????????????,?;?????55%????,??????????????????????????????,??????????????
???????????????,???????????????,??,?????,????????????????????????????????,??????????????????11?????????????????,????????????????,???(???????) ???:??