????:1??????5???:??????????

2???????400???

3?????????

4?????????

5????????95?

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

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