题目内容

词汇与结构The red warning light remains illuminated until the engine parameter is reduced _____ the limit.

A. under
B. above
C. over
D. below

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词汇与结构N1, N2, oil quantity, and engine vibration are displayed ______ from the engine sensors.

A. directly
B. indirectly
C. safely
D. properly

词汇与结构New generation aircraft are very dependent on ______ power because of the wide use of electronic flight instrument systems.

A. electrical
B. manual
C. hydraulic
D. electronic

词汇与结构Power for passenger services is provided to ________ the cabin, to operate the entertainment system, and to prepare food.

A. warm
B. light
C. cool
D. keep

词汇与结构The DC battery bus can _______ the batteries or receive power from the batteries, as required.

A. change
B. dump
C. charge
D. drive

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