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

2????????????

3?????????

4??????

5????????????

???9?????6?????????? (????????????? ?????)??,???,??“????????”?5???,??,?????“???????”+???????????C919?????????

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

??,??????????????,9?????????30????,??????????“??????”9?7??????????????10?????24??,?“??????????”?2?????

???,???????“?????”??,?C919?????8???????15????,?????“????”????????“??”???,?????????C919??,??????????????????

????,“???????”????????C919??“??????????”?????????323.6??????,?????????13.62?,???2125?????,??5246???2024?1??????????????1??????????????????????,??57??,????????????????25????C919???,???????1???,??????????50?,?????????(?)

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