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单选题
机长的操纵盘，杆和脚蹬提供下列哪些独立控制：The pilot’s control wheel, column and pedal provide independent control of the:
A
左副翼，左升降舵，左副翼配平Left aileron, left elevator, left aileron trim
B
所有辅助飞行操纵 All secondary flight controls
C
左副翼，左升降舵，方向舵Left aileron, left elevator, rudder
D
左副翼，左升降舵，左扰流副翼Left aileron, left elevator ,left spoileron
答案解析
正确答案：C
