The antiskid control valve is an electrically controlled hydraulic valve which meters hydraulic pressure applied to a brake in accordance with signals received from the antiskid control unit. The above sentence means "防拖胎控制活门是一种电动的液压活门，该活门可根据从防拖胎控制装置接收到的信号，测量施加到刹车装置上的液压大小。"
A.1
正确答案是A