Monday, September 12, 2022
在LNG加注站中,当储罐压力升高,紧急情况下可以通过()来放空,...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
()指缺陷已有一定程度的扩展,使设备状态信号发生一定的程度变化,...
Thursday, September 15, 2022
下列关系中的Q、H、Q1、Q2、H1、H2分别为两台离心泵串联或...
Thursday, September 15, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
设备防雷接地的基本原理是()。A、引雷入地B、设备吸收C、屏蔽D、避雷...
Wednesday, November 22, 2023
下列()不属于电弧焊。A、埋弧自动焊B、埋弧半自动焊C、电渣焊D、气体保护焊...
Wednesday, November 22, 2023
Thursday, September 15, 2022
在用35公斤手推式灭火器进行灭火操作时,拿起喷枪应视火势距火源(...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
有市电时UPS输出正常,而无市电时蜂鸣器长鸣,无输出,一般不检查()。A、蓄电池B、逆变器控制信号C、逆变器保护电路D、整流器...
Saturday, May 20, 2023
高空作业人员应防止掉东西,使用的工具、材料应(),不得乱扔。A、准确抛接B、禁止传递C、用绳索传递D、人工传递...
Tuesday, May 2, 2023
Thursday, September 15, 2022
Thursday, September 15, 2022