Sunday, March 26, 2023
Sunday, September 11, 2022
Wednesday, August 14, 2024
问题:水电站自动监控系统保证水电站可靠、稳定、安全运转...
Wednesday, October 19, 2022
Wednesday, July 5, 2023
Tuesday, May 6, 2025
问题:正弦交流电路中总电压的有效值与电流的有效值的乘积,既包含有功功率也包含无功功率。...
Wednesday, August 14, 2024
问题:水轮机转轮的减压装置可以减少水轮机的轴向水推力。...
Tuesday, May 6, 2025
问题:导体通电后,在磁场中所受电磁力的方向由右手定则确定。...
Friday, November 1, 2024
Saturday, August 17, 2024
问题:值班运行的根本任务是根据()维持一个水电站或一个变电站的全部机电设备的()和(),保证安全发供电。...
Wednesday, October 25, 2023
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:发电机内部故障的主保护是()A、过电压保护B、失磁保护C、纵差保护D、横差保护...
Thursday, October 6, 2022
问题:用来分离压缩空气中所含的油分和水分,使压缩空气得到初步净化的设备...
Sunday, September 11, 2022
Friday, November 1, 2024
Saturday, August 17, 2024
问题:主变差动与瓦斯保护的作用有哪些区别?如变压器内部故障时两种保护是否都能反映出来?...
Tuesday, May 6, 2025
问题:反击式水轮发电机组停机时机械和电气制动装置都不能使用,则()A、事故停机B、重新开启机组C、自由制动D、允许机组在低转速下继续运转...
Monday, January 30, 2023
Sunday, September 11, 2022