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

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

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

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

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

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