题目内容

词汇与结构Certain engine malfunctions can result in airframe________ from the windmilling engine.

A. disintegration
B. explosion
C. vibration
D. motion

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词汇与结构Reverser thrust is as an assistance to stop the aircraft. Reverser ______the aircraft speed and helps it use shorter runway length to stop.

A. reduces
B. condenses
C. adjusts
D. corrects

词汇与结构As the airplane _____ from cruise to landing, there can be multiple, narrow regions of altitudes and airspeeds where the vibration level can become severe.

A. transitions
B. transmits
C. transforms
D. transfers

词汇与结构In general, airframe vibrations can best be reduced by descending and ________ airspeed.

A. relieving
B. releasing
C. increasing
D. reducing

词汇与结构After descending and reducing airspeed, the existing vibration level is unacceptable, and if it is impractical to further reduce airspeed, the vibration level may be_____ to a previous, lower level by a slight increase in airspeed.

A. relieved
B. released
C. decreased
D. reduced