独立体避雷器的接地电阻,在土壤电阻率不大于500Ω·m的地区不应大于( )Ω。A. 发布时间:2017-12-29 00:09 │ 来源:www.tikuol.com 题型:单项选择题 问题: 独立体避雷器的接地电阻,在土壤电阻率不大于500Ω·m的地区不应大于( )Ω。A.4B.5C.10D.30
题型:单项选择题 Bill Smith can play ____ soccer. His brother can play ____ violin, but they often play ____ yo-yo together. [ ]A. the, the, with B. a, the, for C. /, the, with D. the, / , for 查看答案