问题:《电业安全工作规程》中规定,保证工作安全的组织措施是停电、验电、装设接地线和悬挂标示牌。...
Thursday, October 20, 2022
问题:锅炉结焦后,炉膛温度升高,有利于减少化学未完全燃烧损失及灰渣未完...
Saturday, September 17, 2022
Friday, October 13, 2023
问题:在中性点直接接地的系统中,当发生单相接地时,其非故障的相对地电压()。A、不变B、升高C、升高2倍D、降低一半...
Thursday, July 6, 2023
问题:非当值值班人员用钳形电流表测量高压回路的电流可不使用工作票。...
Tuesday, September 13, 2022
Friday, December 22, 2023
Saturday, September 17, 2022
问题:用万用表测量绕组的直流电阻的目的是()。A、保证设备的温升不超过上限B、测量绝缘是否受潮C、判断接头是否接触不良D、判断绝缘是否下降...
Monday, February 5, 2024
Tuesday, September 13, 2022
Sunday, March 10, 2024
Saturday, November 25, 2023
问题:液体的对流换热系数比气体()。A、差不多B、一样C、高D、低...
Sunday, March 10, 2024
Saturday, September 17, 2022
Friday, December 22, 2023
问题:在压力管道中,由于压力的急剧变化,从而造成流体流速显著地变化,这种现象称为水锤。...
Saturday, September 23, 2023
Saturday, September 17, 2022
Tuesday, October 31, 2023
问题:给煤机运行中发生堵、卡时,应将给煤机停止,并作好防止误启动措施后...
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:动圈式温度表中的张丝除了产生反作用力矩和起支撑轴的作用外,还起导电的作用。...
Sunday, March 10, 2024