????:1??????????:??????????

2????????vx

3??????????

4????????

5????????

????????8?????????????29?????????? (? ??????????????)??(??“????”)?C919??29???????,?????????????C919???

8??29??????????????????,?????????????C919???,?????“???”??? ????? ??

???????????????C919??9?,??,9????????19?????

C919????????????????????????????????????C919?????????????,??“?”???

?????????????????????C919???????????,???????????????C919??“????”??????,???“????????????”?????????,????????C919?????????,??????,???

?????4??,???????100??C919???,?2024??????????2031????????????????C919??,???,????????????????????(???????)

??:???????????