(?????)???????C919???“????” ??????? ?? ????? ???
(????)????:???????
?????2025????“??”???????????????????
???? 1/81????17??,?????,????(???)??(??)?C919??????????????C919????,????C919??,??C919????40???????,??C919????????,????10??C919???????
????:?????
?? ?????????????