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

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

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

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

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

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

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