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