?? ??????????????????
![](https://image.chezhanri.com/2019/0402/20190402172110310.jpg)
????:1??????????:?????????
2???????200????
3???????
4???????
5?????????
7??????7?,?????????????????,8???????????????????88?,????????????????? ??????????????? ???????????????
7?7?,???????????????C919?????????????????,8?????88?,?????????????????????????? ????? ???????????????????
7?7???????????????,????,8???88??????????????????????,?????????????????????? ??? ??????
7??7?,??????????????????????,8???88???,??????? ? ??????
7??7???,?C919???????????,8?88?,????????? ??????????????? ??????
7???????????????7?????,???????????????????,8????????????????????????88???,????????? ??????????????????? ??
???:??