?? ??????????????????
????:1??????:??????
2??????50??
3??????????
4???????
5?????????
??? ??????????
????,??????,??????,???????????????????????,?????????????80%?????????????????,??????96.6%,??????18.9??,????????,???
????,??????,????????????????25????,??????????41.3%????????21.2???????????,????????????????????14.9%???,????60.2%,??????8.4?????
???,???????????“??????????”?????????,????????????????????,????????????????????????????????????,????,???????????????????? ???:??????????????