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

2?????????????

3????????

4???????

5????????

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

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

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

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