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

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