题目内容

词汇与结构As the airplane enters the Mach tuck region, the elevator is ________ to provide a new neutral in an upward direction which is proportional to the increase in Mach.

A. reduced
B. removed
C. repositioned
D. replaced

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词汇与结构The speed trim system actuates the stabilizer trim to maintain ________ speed control.

A. massive
B. positive
C. negative
D. active

词汇与结构The Mach Trim System operates in ________ with the elevator hydraulic power control units and stabilizer/elevator neutral shift mechanism.

A. connection
B. conjunction
C. construction
D. reflection

词汇与结构Each flight control computer (FCC) includes a Mach trim computer with ________ switching to other system if failure occurs.

A. electronic
B. mechanic
C. electric
D. automatic

词汇与结构The system is operational when autopilot is not engaged, stabilizer is not trimming, and control column displacement switches are not ________.

A. motivated
B. innovated
C. actuated
D. activated