?? ????????????
????:1???spa:??????
2????????
3??????????
4?????????
5???????
????????????????????????? ??? ??? ???????
????? ???
???????
?? 1/56??12???????????,2024????“??? ????????????”???????????????????????“??????”????,?????,????28??10?????????8??40????,?????????C919??????????????
??????????????????????:?????
? ???????