碎煤机运行中经常监视电流变化不许超过（）。
参考答案：额定电流
The way he did it was different ________we were used to.[ ]
A．in which
B．in what
C．from what
D．from which
保险法规定，保险解除权，自保险人知道有保险解除事由之日起超过（）天不行使而消灭。
A.10天
B.15天
C.30天
D.45天
