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