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

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

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

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

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

?????????????????:??????????