机身是半硬壳结构。
A.The fuselage is a semi-monocoque structure B.The fuselage is a demi-plate. C.The airframe is of half-shell structure.正确答案A
机身是半硬壳结构。
A.The fuselage is a semi-monocoque structure B.The fuselage is a demi-plate. C.The airframe is of half-shell structure.正确答案A