????:1???????:????95?

2?????????

3?????

4???????

5???95?

????????,12?3??10???58???,??C919???MU5421“???”??????,???????????159?????

??C919???????????????,?????????????????????????,??C919??7?????????????????????

??????,?????????????B-657T???????C919??C919?????????,?????????WiFi??,?,????,????“????,??Wi-Fi???????????”??(?? ?????? ?? ???)

???????:?????????????