问题:在安全技术中,允许类标示牌应采用()A、红色B、绿色C、黑色
Monday, December 18, 2023
Monday, December 18, 2023
问题:一般情况下,在三相四线制供配电线路中,中性线的截面可以比相线的截面小一些
Friday, September 16, 2022
Friday, September 16, 2022
Tuesday, October 10, 2023
问题:电气设备的操作状态分为()状态,()状态,()状态,()状态。
Friday, September 16, 2022
Sunday, September 24, 2023
问题:双臂电桥能消除引线和接触电阻的影响,但在连接被测电阻时,要注意接头的位置,应使()A、电流接头在电压接头的内侧B、两接头互相绞接在一起C、电压接头在电流接头的内侧
Friday, June 23, 2023
Friday, September 8, 2023
Tuesday, September 13, 2022
问题:电压互感器的误差与二次回路的阻抗有关,并伴随着阻抗值的变化在()A、阻抗值增大时,误差减少B、阻抗值减少时,误差随之增大C、阻抗值增大、减小都超出一定值后,误差才超出规定。
Thursday, November 23, 2023
问题:安装调整碳刷时,其电刷接触面应与()的弧度相吻合,接触面积不应小于单个碳刷截面积的()
Tuesday, July 11, 2023
Tuesday, September 13, 2022
Monday, December 18, 2023
Thursday, January 11, 2024
问题:在易燃、易爆场所带电作业时,只要注意安全,防止触电,一般不会发生危险。
Thursday, November 23, 2023
Friday, March 1, 2024
Thursday, January 11, 2024
Sunday, September 11, 2022
Friday, September 16, 2022