Monday, September 12, 2022
问题:CFB锅炉常用的非机动阀的形式是()A、S阀B、U阀C、J阀D、J阀的简化形
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:热力除氧必须要将水加热到对应压力下的饱和温度才能出去()。A、钾B、氢C、氧D、杂质
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Sunday, January 8, 2023
问题:风机启动后如发现转动部分由强烈噪声,应()A、详细检查B、立即汇报C、停机检查D、要求检修人员确定
Saturday, September 17, 2022
问题:电力系统中的主要负载是异步电动机和变压器。这些设备均从电网汲取大量的()以供其励磁之用。A、无功功率B、无功损耗C、有功损耗D、有功功率
Saturday, September 17, 2022
问题:220kV电压互感器二次熔断器上并联电容器的作用是()。A、无功补偿B、防止断线闭锁装置误动C、防止断线闭锁装置拒动D、防止熔断器熔断
Saturday, September 17, 2022
问题:自动开关性能完善,当电路发生故障时,能自动地切断电路,保护有关的()。A、电动B、电气设备C、电缆D、电路
Monday, September 12, 2022
Thursday, September 15, 2022
Saturday, September 17, 2022
Friday, September 16, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
Saturday, September 17, 2022
问题:大型变压器的效率一般在()以上。A、99%;B、98%;C、97%;D、95%。
Saturday, September 17, 2022
Saturday, September 17, 2022