?? ??«?????????»???????
![](https://image.chezhanri.com/2019/0718/20190718173346508.jpg)
????:1?????????????:???????????
2????????
3?????????
4?????
5???????
??6?????????????18?????????? ?,??????????,?????????????,?,???????????«???»(GB 44022-2024)????????????,??????2024??11??????????????????1????????
????????????????????????????????????,?????????????????????????????????????????????,???????????,?????,??????????????????,??,????????????????????????????????????????
?????????,?,??????????????? ???????????????????????:????????????????????????