题目内容

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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词汇与结构The strongest vortices are produced by heavy aircraft flying slowly _________ a clean configuration at high angles of attack.

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

词汇与结构_________ wake vortices can also be generated by maneuvering aircraft, for example, during aerobatics.

A. Considering
B. Considered
Considerable
D. Consider

词汇与结构Aircraft with smaller wingspans generate more _________ wake vortices than aircraft with equivalent weights and longer wingspans.

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

词汇与结构If the jam exists during the landing phase, higher forces are required to generate sufficient elevator control to _________ for landing.

A. climb
B. dive
C. flare
D. pitch