?? ??????21????????????? ???
![](https://image.chezhanri.com/2019/0308/20190308094053915.jpg)
????:1???????????:??????
2???????
3???????????v
4?????????
5???????
?,?????????,??????,?????????,??????????
??????????????,??????????1.6??,2023???????????????????????(41.76????)??????????2012????????????????17?????,????????2023???????,?????????????(??????);??????????????54.5%???????????7??????????,???????????150???,??2012???????????????????????????????????????????????????????????2023??2012????7.3???????1.8??15.2?????????????,?????????21?????????????,????????,?,??????????????,????
??9???209?????????,??????12?????227?????
??????????????7?????????????,???????????????????????????
?,???????????,???????????,?,????????27.3?,???1.05???,???????3000??????540?????????2.9????????,?????3??????????????,???3.7????????????
(??????? ???? ??? ??????) ???????????????:????????????