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单选题
确保襟翼缩回，并且副翼配平手轮位于零位。
A
The slats shall be retracted to ensure that the aileron trim handwheel is in the initial position.
B
Be sure to retract the flaps and keep the rudder trim handwheel in the original position.
C
Make sure that the flaps are retracted and the aileron trim handwheel is in the zero position.
答案解析
正确答案：C
相关知识点：
襟翼缩回，副翼手轮归零位
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