(???????)????:C919????

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

1?????26???,C919???CZ3803??????? ? ??  1???????????26??,C919?CZ3803?????????? ?? ??  1?26???????,?C919?CZ3803??????? ? ?  1???26???????,C919?CZ3803???????? ??? ?  1?????????26?,?C919??????? ??? ???  1?????????26?????,C919?CZ3803????? ? ?  ??????:??????