问题:多选题现代大型自然循环锅炉多采用()A大直径集中下降管B小直径分散下降管C折焰角D后屏过热器...
Thursday, November 9, 2023
Thursday, September 22, 2022
Saturday, September 17, 2022
问题:立式钢管空气预热器中,烟气流速过高,则管壁()太快;烟气流速过低,则易发生()。...
Tuesday, September 20, 2022
Tuesday, September 20, 2022
问题:多选题锅炉运行时,过热器管壁超温的原因有()。A过热器减温水量减少B过热器管中蒸汽流量降低C过热器内部结垢D过热器外部结焦...
Tuesday, May 7, 2024
Wednesday, September 21, 2022
Wednesday, September 21, 2022
问题:单选题锅炉腐蚀除了烟气腐蚀和工质腐蚀外,还有()。A 汽水腐蚀B 应力腐蚀C 硫酸腐蚀D 电化学腐蚀...
Tuesday, May 7, 2024
问题:单选题锅炉点火以后,在开始升压阶段,每升高单位压力时对应的饱和温度上升值()A 较小B 较大C 相等D 不变...
Friday, September 20, 2024
Wednesday, September 21, 2022
问题:填空题启炉前各风机挡板及执行机构动作灵活,开关方向正确,挡板应()。...
Tuesday, July 29, 2025
Saturday, March 4, 2023
Wednesday, December 27, 2023
Saturday, October 5, 2024
问题:填空题造成下降管中含汽的主要原因有()和()及()。...
Wednesday, November 29, 2023
Saturday, September 17, 2022
Wednesday, September 21, 2022
Wednesday, September 21, 2022
问题:判断题锅水质量不合格,悬浮杂质太多、锅水含盐浓度太高是产生汽水共腾的一项主要原因。A 对B 错...
Sunday, January 7, 2024