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

????????:?????????????? ??“??????”

?? ?????????????? 16??C919“??????”??

????:1???????:??92?95?98?

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

3??????????

4?????????

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???????????,?????????????,????????,???????????????????

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