The parking brake is set by depressing the____ (刹车脚蹬) fully, pulling the_______(刹车手柄) on the _____(操纵台), then releasing the brake pedals.
A.brake linkage, parking valve,control stand; B.parking pedal, brake line,control stand; C.parking pedal,brake valve, stand; D.brake pedal，brake lever，control stand;正确答案D
