?? ?????!?????C919“????”????????
????:1??????????:????????????
2???????
3???????
4???????
5?????????
2025?????????????1????????1?????,????????????????????????????C919???????????????MU721“????????????????”???,???
“????????????????????2025????,??????????C919??,???……”2025??,??,??C919????MU721“?????????????????????”??????????,????C919???9???,?????(??????? ?? ?????)
??:??