?? ???7????????????????50%
![](https://image.chezhanri.com/2019/0807/20190807120043689.jpg)
????:1?????????:??????vx
2????????
3??????92?
4?????????
5??????vx
??8?23? (??)????23??1??7???????????????????,??7???50%?
????,????7???,???31.0??,??14.0%?????,????7.4??,??49.8%;??4.7???,???????19.8%?
????????????1????7???,??????????1994??,?91?????????????????1????????????7????,????????4158?(??,?????),??2.6%???2947???,?19.2%?(???)
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