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

2????????

3????????

4?????+Q

5????????

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

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

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

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