????: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

???????

?????

?????!

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

??

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

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