用电压互感器测量交流试验电压时,将电压互感品的高压绕组并接在试品的(),在其()测量电压,根据测得的电压和电压互感器的()计算出高压端的电压。
参考答案:两端;低压绕组;变化
Lucy was called to ____ her stupid deeds the night before, but she couldn’t remember anything.
A. pay for B. leave for B. account for D. look for
在Windows XP中,由于各级文件夹之间有包含关系,使得所有文件夹构成一个______状结构。