?????? 16??????????????C919“??”??

?:1??18??????????,??????????????12306????,??????????????????18???????8?????????????,??????1.75???????,??????18????????????2?1????,???

???:????“????”????

?,???,?????????“???”?????“??”?????????,???“??”??????,???

?????????,??????????????????????,???,?????,????????????????????????“????????????????”?800?????????????,???????600????????????????

??????????????????????????????,??1200??????????????????

?????????????????????????????,????????????????“?”“????”?,?????????65%?

16????????C919??

?????????????,??????????16????????????C919????,?C919???????

??,??10??????C919???,????????????????3?????C919??,??????????????????????????????????????????5???????????????,??????????400???????????????????????3????????C919??????,??????????????????????????????4???????????????????????

??????,??C919???????,????????????????????,????????,??????????????