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

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

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

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

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

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