OnMay5，2017,China’shome-madepassengeraircraft(飞机）G919co...
问题详情：OnMay5，2017,China’shome-madepassengeraircraft(飞机）G919completedits90-minutefirstflightandlandedsafelybackatPudongAirportinShanghai.G919isdevelopedbyCOMAC,aChineseaircraftcompany.Itisdesignedto...