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