?? ????C919??????? ????“?”??????
????:1???????:?????
2???????
3?????
4?????????
5???????
????9????30?????? (?????????????????? ?????????)“???????????????,???????????????????,?????????……”9???????????29????,?????CZ3539???????C919??,??????????????«????»???????“?????????????”“??????”????,?????????????????75?????
??“????????”????????????? ????????,?????????????????????????????,????????“?????????????????”????????????,????????«??????»?????????????,?,???????
?,????,?????????C919???????????????????,??:“??,???????????????,????????????????,?????????????”????????
???????“???????????????”????????“C919???,????75???????????,??????,???????”????????
??,?????????????????????????????????????????30??????“??”???????????????,??75????????(???????)
?????????????:?????????????