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

2???????

3?????????

4???????

5??vc????????

?6?????7??? (?? ??)??????????????ARJ21?6?????????7???????????,????10??38??

6?????7?????????????????????????,????????????ARJ21????????????? ?????? ?

ARJ21??????EU2977?,????????,????????????????1628??,??3????????????????????????????,????ARJ21??,????,??,??

6?7???????,???????ARJ21????????????????????????????? ?? ??????????

????,??,????????????????“???????????????????????????????”????????????,?????????,????????,???????,?????????????,??,????“??”,?“???”??????

6???7??????????,?ARJ21??,?????????????????????? ??? ?

?ARJ21????????????2016???6????????,?????1300???2023??????????????6?????????????????????????????,?,????????????????????????????????,???9????????????????ARJ21??????,?43?????“???????????”?????,???23??????????????,?????92%,?????????????????????????“??”????(??????)

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