???????????????
2?10????,??????????,???????(???)????,8??????????,???????,???,????
?????,????????,???????????????????????????????3????????????,????????700??????????????????????????,?????????98.2%?
????(???)???8????????????????,????????????70??????52?????,???20?????
???????????,????????????2?????????20??????????1????????????????15?????????????????,???500?????????,??(????????? ?????????????????????)
???:?????????