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

2???????

3???????

4??????????????

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

2025???1?????1??????????

????????

????????

??????

??????

?????????

2025?

????????

2025???

??????????

???????????? ????????????????

????????????

????

??

2025???????????

???????

???????? ???????????????

2025??????????????????

?

?2025??

???????

?????????

?

?

???

???????????

2025????

?????????

???“?????????”

??????41????

?????

?????

?????74°56'

???????????????

2025????????????????

?

2025???

C919?????????“????”

??????

???????C919??

MU721“?????????”??????????

?

?????

C919????“??????????”?????????????

???????“???????”?????????????

?

??

???????????

????????????

????????

????????

2025?????????????

“????????????????”?????

?????????

??????????

??2025??

??

?????“??????”??????

??

?????

??????????

?:????2025?????????????,???????????:?????,??????????!

2025

???????

?????

????????????????!

????

????

??????? ????????

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