????: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

????

??????

?????????!

??????

??????

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

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