【单选题】

确保襟翼收回，并且使副翼配平手轮处于零位。

A、Make sure that the flaps are retracted and the aileron trim handwheel is in the zero position.
B、Ensure that the flaps are partially extended and the aileron trim handwheel is centered at zero.
C、Make sure that the flaps are raised and the aileron trim handwheel is set to non-zero position.