???????????????

????:???????:???ih????????

2???????????????????????????????10????,???,????????????????(???)???,8?????????,??????????,???,???

??????,?,???????3????????????????????????????,????700????????????????????????????????????????????????,????????????????98.2%?

?????(?????????)????????8???????,?????????70?????????52?,?20?????

????????????????,???2????????20?????????1????????????15?????,??????????500???,????(??? ?????????)

????:?????