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

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

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

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

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

?:???????