地区电缆芯线和金属护套间的绝缘电阻()不论长短。A.≥5MΩ B.≥6MΩ C.≥7 发布时间:2020-01-19 05:42 │ 来源:www.tikuol.com 题型:单项选择题 问题: 地区电缆芯线和金属护套间的绝缘电阻()不论长短。A.≥5MΩB.≥6MΩC.≥7MΩD.≥8MΩ
题型:单项选择题 If they had known what was coming next, they _____ their mind. [ ]A. may change B. could change C. must have changed D. might have changed 查看答案