?? ???:????80%??????????????
????:1???????:???????
2??????
3???????????
4????????
5?????????
????????????????????12????????5?????????? ??????????,???????????????«?????????????»?12????5?,???????????????,??«???????????»??,????
????????????????????,??????????????????,???????????,??????????80%??????????????,???????96.6%,????????????????????????????18.9????,??,??
???:???????????????????