???????????????
2????????10???????????,?????????,???????????????????(???)??????,8?,?????????,??????????,????
????,?,????3??????????????????????????,?????????700????????????????????????????????????????????,????????????98.2%?
???(??)?????????????????????8???,???????70?52???????????????????????????????,?????20??????
????????,???2????????????20????????1????15???,?500???,??????????(??? ???)
????:???????????????????
??
???:????