?? ????????19???? ???????
![](https://image.chezhanri.com/2019/0613/20190613110202519.png)
????:1?????????:???????
2????????
3????????????
4??????????
5???????
??8???19????? ????,????????19?,??,?4.7???????????5.1??????????,?,??????
????????,4.7???19?????0??48??????????,?,???????????????????4???
?2???,?5.1??????,????????????????5??
????????,??????????(????2??????3?)??????????,?,??????????,?????????????? ????:????