?? ????????????????????????????????
![](https://image.chezhanri.com/2019/1213/65f316e2606b8fe90c552734daa21665.jpg)
????:1????????????:??????????
2??????
3????????????
4????????????
5????????
???????(????????????):???4??????????????????“??”??,???
????????????????,?????,??,???????????????????????????????,????????????????????????8???????,????????????????????????,??25.7%,?????????45.5%?
????,?????????????????????????????????????????????????????????????????????6?????,??,???????????????????????,?????
??????????:????????