题目内容

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

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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

词汇与结构The effect of wake turbulence on an aircraft depends on many factors, including the weight and the wingspan of the following aircraft and _________ positions of the following aircraft and wake vortices.

A. correct
B. appropriate
C. relative
D. available

词汇与结构In its mildest form, you may only experience a _________ rocking of the wings, similar to flying through mechanical turbulence.

A. heavy
B. big
C. active
D. slight