高压配电装置控制回路的绝缘电阻用500V兆欧表测量至少为()兆欧。A、0.2 B、0. 发布时间:2018-09-29 22:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: 高压配电装置控制回路的绝缘电阻用500V兆欧表测量至少为()兆欧。A、0.2B、0.5C、2
题型:单项选择题 Now the environment in city is _______ than it was before. We should keep it clean. [ ]A. much better B. more worse C. more better D. much worse 查看答案