?? ??????18????????4.7??????
![](https://image.chezhanri.com/2019/1107/c74917a41b06096b85c0793271598545.jpg)
????:1?????98?:?????
2?????????
3??????????
4???????
5??????????
?????????????????????????6??13?????????????????? (???????? ??)????????13???????,??????????18???????????????,???,?????4.7???
???????????(?????????????)??????????????,??????,???,????????
????????,??,???????????????????????????????????? ???
???????????????,?????????,???????????????????????,??????????????,?????????,???????,????,?????
??,????????????????????????????????
????,??6???????17??????????????,??????
?????,??,?????????????????,??????????????????,???????????,???????????????????????
????????,???????????????????????????,?????????????????????????????,????,???????????????????????????,???
???,?????????????????????,?????????????,???,????,??????(???????????) ???????:???