问题:电动机“大马拉小车”运行导致电动机()A、效率升高B、效率降低C、功率因数升高D、功率因数降低...
Tuesday, January 30, 2024
Tuesday, January 23, 2024
Thursday, June 8, 2023
Tuesday, January 23, 2024
问题:若锅炉过量空气系数a值过小,可能造成()。A、烟气中一氧化碳CO气体浓度升高B、烟气中硫化氢H2S气体浓度升高C、煤灰的熔点升高D、引起水冷壁结焦和四管高温腐蚀...
Monday, January 9, 2023
Thursday, February 8, 2024
问题:发电企业应对全厂和机组的发电量、发电煤耗率、供电煤耗率、供热量、供热煤耗率等()进行统计、分析和考核。A、运行指标B、宏观指标C、微观指标D、综合经济技术指标...
Wednesday, October 18, 2023
Thursday, February 8, 2024
问题:若锅炉空气量过大,可能表现或造成()。A、炉温降低,燃烧不完全B、二氧化碳表读数大C、送引风机电耗率增大D、不影响排烟热损失...
Tuesday, January 30, 2024
Thursday, February 8, 2024