?? ????????????????? ?????????
![](https://image.chezhanri.com/2019/0225/20190225152513550.jpg)
????:1?????????:???????????
2?????vx
3???????????
4??????????
5????????
????????????????7?4?? (?? ????)??????????????????4?,???????????????17.4%????37.6%?????,??
????????????,7????????4???????????????????????,???????????????3???????????????,????????????????17.4%,???????19.9%,???????37.6%?
???,???????20.8%;?,??????????????????????????37.6%?
?,????,??????????????,???????????
2023???????10???????????4??,????????????,7???4????????????,???????????????????????4??????????
?,?4????????,???,?????,?????????????,???????????????????????,???????????,???(?) ????????:?????????????????????