问题:6KV户内终端头揽芯引出的最小绝缘长度是()。A、210mmB、250mmC、270mm...
Saturday, April 27, 2024
Thursday, March 28, 2024
Saturday, March 23, 2024
Friday, January 13, 2023
Saturday, April 27, 2024
Monday, June 12, 2023
问题:硬母线是怎样连接的?为什么不同金属的母线连接会氧化?怎样防止?...
Sunday, February 11, 2024
问题:从开关接到到分闸指令时起到()的一段时间为固粗分闸时间。A、首相主回路触头刚脱离电接触时止B、三相主回路触头刚脱离电接触时止C、三相主回路电弧均已熄灭时止...
Thursday, February 8, 2024
Saturday, April 27, 2024
问题:互感电动势的方向是由互感磁通的增大或减少以及()决定的。A、磁通的变化率B、电流的变化率C、线圈的绕向...
Saturday, March 23, 2024
问题:3KV室内配电装置网状遮拦裸导体至地面的高度最小允许距离为()。A、1875mmB、2375mmC、2425mmD、2725mm...
Thursday, March 28, 2024
Thursday, March 28, 2024
Saturday, March 23, 2024
Thursday, February 22, 2024
Friday, August 11, 2023
Tuesday, October 17, 2023
Saturday, April 27, 2024
Tuesday, October 17, 2023
Monday, July 17, 2023