词汇与结构Leading edge devices consist of four flaps and eight slats: two flaps inboard and four slats_________ of each engine.
A. onboard
B. inboard
C. aboard
D. outboard
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词汇与结构The lowest pressure occurs over the _________ surface of the wing, and the highest pressure is formed under the wing.
A. upper
B. lower
C. above
D. below
词汇与结构_________ from behind, the left vortex rotates clockwise and the right vortex rotates counter-clockwise.
A. Being viewing
B. Viewing
C. Being viewed
D. Viewed
词汇与结构The greatest hazard from wake turbulence is induced roll and yaw. This is especially dangerous during takeoff and landing when there is _________ altitude for recovery.
A. no
B. enough
C. little
D. few
词汇与结构The greatest hazard from wake turbulence is ________ roll and yaw.
A. induced
B. reduced
C. introduced
D. increased