??
??:1????18????,??????????12306????????,??18??????8??????????????????,???1.75????????????????????????????,??????????????????????18????????2????????????1???,??????
??????????:????“???????”?
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???,?????????????????????????????,???,?????,???????????????????????“????”?????????????800??????????????????????,????????????????600????????????????
?????????????????????????????????????????????????????????,??1200??
????????????????????????????,????????????????????“???”“??”????,???????65%?
16????????????C919?
?????,???16?C919?????,????????????C919?????
???,??10??C919??????????,?????????????????3????????C919?????????,?????????????????????????????5??????,???400????????????????????????3????C919????,??????????????????????????4?????????????????
??,???C919??????????????,????,???,???????
?????:?????????????
??????? 16??????C919“??”???????????????????????????