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

??????????

?????

????

????????

???????

2025??????????

??

2025???

??????????

? ????

????

????

??????????

2025?????????

?????????

?? ??????

2025?????

???????

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

??

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

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

?????????

??

??????????

2025?????

????

?????????????“?”

????41???????????

?????

????

????74°56'

???????????

2025?

???????????

2025??

C919?????“????”

??????

??????C919??????????

MU721“???????????”????????

???????

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

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

????????????“??”???????

?

???????

?????

?

?????????

????????

2025??

“?????”????????

?????????

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

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

???

?“??????????????????”??????????

???

???????????

?????????

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

2025

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

??

????????!

??????

?

??? ????

(??) ??????:??????? “????????”_????

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

????: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

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

??

????????!

??????

?

??? ????

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