?? ?????????????????
![](https://image.chezhanri.com/2019/0517/20190517111647425.jpg)
????:1????????????????:??????
2???????600
3???????
4???????
5??????????
????????6?????????????????19?????????????(???????? ?)6????????????????????????????19????,???????????????????????????????
?????????,????????,?????????????,??????????????,?,?????????????,?????????????????????,?????
??,???????????,??????,????????,???????????????,???
??????????:???????????????