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单选题
The yaw damper system keeps the airplane stable around the airplane yaw(vertical)axis to command rudder movement in proportion to and opposite to the airplane yaw moment.
A
The rudder will be moved in proportion to and opposite to yaw condition of aircraft to keep it stable around vertical axis by the yaw damper system.
B
The rudder will be moved in unticlockwise to yaw condition proportionally of aircraft to keep it stable around vertical axis by the yaw damper system.
C
The rudder will be commanded to move in opposite to yaw condition proportionally of aircraft to keep it stable around vertical axis by the yaw damper system.
答案解析
正确答案：C
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