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

2????????????

3??????????

4???????800??

5??????????

???: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?????????????????????,?????????????????????,????,?????

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