题目内容

词汇与结构Research shows the greatest potential for a wake turbulence incident occurs when a light aircraft is _________ from base to final behind a heavy aircraft.

A. proceeding
B. turning
C. approaching
D. taxing

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词汇与结构Flight control surfaces utilize aerodynamic forces to lift the airplane _________ the ground and to support it in the air.

A. of
B. in
C. off
D. with

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A. under
B. in
C. during
D. over

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A. Considering
B. Considered
Considerable
D. Consider

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A. intense
B. extended
C. intensive
D. massive