突然发生的,短暂的意识丧失,常能在短时间内(如几分钟)恢复是什么?()
A.昏迷
B.昏睡
C.谵妄
D.嗜睡
E.晕厥
参考答案:E
— Do you enjoy listening to records?
— I find records are often ____ or better than an actual performance.
A.as good as
B.as good
C.as well as
D.good as
每当数控装置发出一个脉冲信号,就使步进电机的转子旋转一个固定角度,该角度称为步距角()