测量接地地阻时,最好要保证辅助电压地桩距离接地体(),以减少测量误差。A.5米 B. 发布时间:2017-05-14 05:19 │ 来源:www.tikuol.com 题型:单项选择题 问题: 测量接地地阻时,最好要保证辅助电压地桩距离接地体(),以减少测量误差。A.5米B.10米C.15米D.20米
题型:单项选择题 He ______ morning exercises yesterday.A. wasn't do B. didn't C. didn't do D. doesn't do 查看答案