????:1???????????:????????

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

3??????

4?????????

5??????

?11???????12? (??? ????)?(?)12????????????????,?????C929???,???C919??????????????ARJ21???C909??130??????

??(????????????)??????????????(?????????????????)???C929???,???C929??

11?????????12??,???,???????????C929??????????? ????????????????????? ??????????

????????,C929???????????,??????????????280??,???????12000??,???????????

?,????ARJ21??????C909,?????????????2016???????????????,C909??150?,??????1700???????????,?????????????“????+???????????????”???????,????????????3????????“???C909”“????????????C919”??“????????????????C929”?

???????,????????????,??????ARJ21??????,??“C909”,???????????????????????,?,???

11???????12???????????,?????,?????????????????C909??? ??????????????? ????

??????C919????????????????C909????60?????????????70???????,?60????C919????40??C909??????????????;??????30???????C909??,???????????????????????20??10??????????????????

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

????????????????????,???,???50???????????????????,????????????????????????????????????????????????????????,?????????

11?12?????????????????,????,????C919?C909???????? ????? ?????????????

??????:????C909????????????????????????????C919????,????????C909????????????????C919???????????????(??)

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