The EMU is of aerodynamic shape, the two ends being the __________. The EMU will be controlled by the driver’s cab of the front end while running normally. 350公里/小时动车组为空气动力形状，两端是_________。动车组正常行驶时由列车前端的驾驶室控制。
A、locomotives 机车
B、driver’s cab 驾驶室
C、traction unit 牵引单元