????:1???????100?????:???????

2???????

3?100?????

4????????

5???????

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

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

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

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

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