40. 當機翼上之襟翼放下時會增加飛機之
(A)Lift and Drag
(B)Lift and Thrus t
(C)We ight and D rag
(D)Weight and Thrust。

答案：登入後查看
統計： A(25), B(2), C(2), D(1), E(0) #2117407