【单选题】

该系统中的这一部分用来控制飞机在地面上的运动方向，包括作动筒油缸、操纵装置、轮架旋转开锁装置等。

A、That portion of the system is used to control the direction of movement of the aircraft off the ground, including items such as shock strut, controls, bogie swivel unlock, etC.
B、That portion of the system is used to control the direction of movement of the aircraft on the ground, including items such as skid blocks, controls, bogie swivel unlock, etC.
C、That portion of the system is used to control the direction of movement of the aircraft on the ground, including items such as actuating cylinders, controls, bogie swivel unlock, etC.