问题:一般要求高.中压外缸上下缸温差不超过().内缸上下缸温差不超过(...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:电动工具在使用过程中突然停转,应及时切断电源,并查明原因。...
Friday, September 16, 2022
问题:新汽压力为12.75MPa的国产20万千瓦机组属于()。...
Friday, September 16, 2022
问题:当变压器发生一般过热性故障及局部放电故障时,其特征气体各具有什么...
Friday, September 16, 2022
Monday, September 12, 2022
问题:当除氧器运行中压力突然降低时,水中的溶解氧含量将()...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:自动修改数据库记录,应用“表”菜单中的()命令。...
Friday, September 16, 2022
问题:斗轮机、皮带等贮运煤设备开动前,必须进行音响警示,管理部门应对(...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:管子对口焊接前应打磨出合适的坡口并留1~2mm的对口间隙。...
Friday, September 16, 2022
问题:吊芯检修变压器器身时,只要环境温度和油温相同就可吊芯。...
Friday, September 16, 2022
Friday, September 16, 2022
问题:倒闸操作可以通过就地操作、遥控操作、程序操作完成。遥控操作、程序...
Friday, September 16, 2022
问题:简述蒸汽管道的疏水按投入运行时间和运行工况的三种排放方式。...
Tuesday, September 13, 2022
Friday, September 16, 2022