Tony was very unhappy for    to the party.[ ]

A. have not been invited            

B. not having invited

C. having not invited              

D. not having been invited

驾驶员丧失能力时，操作正确的是（）.

A.把丧失能力的驾驶员座椅拉到最大限度并使其后斜

B.把飞行员小腿后拉并交叉

C.将氧气选择在normal档位，把应急供氧开关旋钮打开。

D.如有条件，把丧失能力驾驶员搬出驾驶舱进行急救