?? ???????????????????80%
![](https://image.chezhanri.com/2019/1113/3063adbeac5ee83308258a544b26da4b.jpg)
????:1???????:???????
2???????
3???????
4????????
5?????????
????????,???????,???????????,???????????????
?????????????,??,??????,?????,???????
????????????,????????????????,??,?????????????????????
????,??????????????????????????????????????????????????,???????????????7?????????????????????????8????????????????90%???????????80%,?????????????
(?????????? ???? ?? ?????? ?????????????????? ????? ?????????????? ???)
??:???