夜间开车时，对面汽车的大灯照射在驾驶员的眼睛时，驾驶员眼睛睁不开，视线模糊，这时称为（）。
参考答案：眩目
He's worked in the factory for many years, ______ he? [ ]
A. has
B. hasn't
C. isn't
皮带防护罩与皮带的距离不应小于( )。
A．2m
B．50mm
C．15cm
D．3m
