高压开关柜定期交流耐压试验时，只需在施加分闸时试验电压。
参考答案：错
Ten years ago the population of our village was ____ that of theirs. [ ]
A. as twice large as
B. twice as large as
C. twice as much as
D. as twice much as
下面何种天气现象出现在强雷暴云中（）.
A.阵风
B.飑
C.闪电
