题目内容

词汇与结构Among the units commonly ________ by hydraulic systems are landing gear, wing flaps, slats, speed and wheel brakes, nose wheel steering and primary flight control surfaces.

A. applied
B. updated
C. cooperated
D. operated

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词汇与结构The hydraulic reservoir is a tank or a ________ designed to store sufficient hydraulic fluid for all conditions of operation.

A. maintainer
B. retainer
C. container
D. obtainer

词汇与结构Hydraulic pressure must be ________ in order to use it to perform the desired tasks.

A. regulated
B. administrated
C. governed
D. regulation

词汇与结构The filter can prevent ________ particles and contaminating substances from remaining in the system.

A. domestic
B. foreign
C. strange
D. outside

词汇与结构In the event of hydraulic failures, the pilot will normally inform ________ about controllability of the aircraft and his further intentions.

ATC
B. ETC
C. FBI
D. PFD