保护接地装置的接地电阻不宜超过()。A.4Ω; B.5Ω; C.10Ω; D.30Ω 发布时间:2020-01-01 15:25 │ 来源:www.tikuol.com 题型:单项选择题 问题: 保护接地装置的接地电阻不宜超过()。A.4Ω;B.5Ω;C.10Ω;D.30Ω。
题型:单项选择题 The doctor advised me to go on a diet because I ___ weight during the last two months. [ ]A. put on B. have put on C. had put on D. would put on 查看答案