8????5?,??MU2113????,??139??????????,??,??????,?????????C919?????????,???????????“??”???,???5????????C919??????????????(?? ?? ??? ?????????????)

?:????????

??“?????”????

?? ????C919?????“????”

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

2????????

3??????????

4?????????

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

8????5?,??MU2113????,??139??????????,??,??????,?????????C919?????????,???????????“??”???,???5????????C919??????????????(?? ?? ??? ?????????????)

?:????????