????:1??????:?????????????

2????????100?????

3?????????

4??????????

5?????????9598

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

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

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

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