?? ???7????????????????50%
![](https://image.chezhanri.com/2019/0505/20190505142958909.jpg)
????:1???????????:???????
2????????????
3?????200??vx????
4??????????
5???????
???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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