?? ?????7???????????31?10?
![](https://image.chezhanri.com/2019/1215/8c04dce510001318f58424b6e910fe6b.jpg)
????:1???????:??????????
2??????
3???????????
4??????
5????????????
?7????31????????????? ?,??????7??31?????10??:??????,7?31?14?????8?1?????????????14?????,???????????????????????????????????????????????????????????????,????,???????????????????????(100~180?)?????(????20~50???????????,?80??),???
![](http://i2.chinanews.com.cn/simg/cmshd/2024/07/31/028c7e92543d47a6a1b18ae6a507d674.jpg)
???????????????:
1??????????????;
2???????????,?????;
3??????????????,????????;
4??????,???????????????????
??????:???