亚洲av综合久久伊人,国产日韩久久免费影院,中日韩激情白浆一区二区三区,AV片在线观看

This year, COMAC has finished building the front and middle segments of the C919's prototype, along with the plane's center wings and ailerons. The first prototype of the C919 will be assembled later this year to prepare for its first flight in 2015.