As the debate of women's rights continued, the women's movement began to gain ground, but soon it received a major setback.

A．get floor

B．obtain profit

C．get a place

D．go forward

电压波动以电压急剧变化期间，（）之差相对于电压额定值的百分数来表示。

A.电压实际值与电压额定值

B.电压最大值与电压最小值

C.电压最大值与电压额定值