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钢琴重奏练习技巧要求有哪些？
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Ailerons, elevators and rudder are the secondary flight control surfaces of an aircraft.
Trailing edge (TE) flaps and leading edge (LE) flaps and slats (LE devices) are parts of high lift devices receiving power from hydraulic system B.
Roll control is accomplished by a hydraulically powered rudder and electrically flight spoiler.
Roll control is provided by the ailerons about the airplane’s vertical axis from nose to tail.
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