问题: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
Thursday, September 15, 2022
问题: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
问题:垂直U型压差计当U型管压力计没有与测压点连通前,U型玻璃管内两侧...
Thursday, September 15, 2022
问题:天然气的爆炸极限是()。A、5%~15%B、15%~55%C、55%~75%...
Friday, August 4, 2023
Thursday, September 15, 2022
问题:液化天然气储罐一体化伺服液位计可以用来测量储罐的()A、液位、温度和密度B、液位、压力和温度C、液位、密度和流量D、液位、压力和流量...
Thursday, August 24, 2023
问题:自重式防火阀要注意叶片的上下气流()标志,不得倒置。...
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
问题: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
问题:LNG操作人员因PPE穿戴不齐全不慎发生低温冻伤后,将冻伤人员冻...
Thursday, September 15, 2022
Thursday, September 15, 2022
问题: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
问题:下列选项中,不属于润滑油过滤器组成部件的是()。A、壳体B、多元滤芯C、超细玻璃纤维滤纸滤芯D、反冲洗机构...
Thursday, August 24, 2023
问题:变压器的铁心和绕组装配到一起组成变压器的器身,通过产生()工作。A、电磁藕合B、电压C、电势能D、电流...
Wednesday, November 22, 2023