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

2????????

3????????

4??????????????

5???????

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

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

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

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