问题:计算题:已知塔底液面距地面4m,机泵入口距地面0.5m,油品相对...
Monday, September 12, 2022
Monday, September 12, 2022
问题:向澄清石灰水中通入某种气体出现白色浑浊,该气体是()。A、氧气B、水蒸气C、氮气D、二氧化碳...
Saturday, April 13, 2024
问题:当换热器中两流体均无相变时,尽可能从结构上采用接近逆流的()的流向以得到较大的传热温差。A、错流B、折流C、层流D、涡流...
Saturday, April 13, 2024
Monday, September 12, 2022
Monday, September 12, 2022
问题:压缩机输出气体的有效功率与压缩机轴耗功率之比,称为()。...
Monday, September 12, 2022
Sunday, September 11, 2022
问题:在轴流压缩机叶栅出口气体静压比进口静压高,因而在动叶顶部和静叶端部形成()。A、漏气倒流B、气体回旋C、轴向流动D、径向流动...
Saturday, April 13, 2024
Monday, September 12, 2022
问题:设备维护中的一个重要环节是()。A、检查B、修理C、备件D、更换...
Wednesday, January 31, 2024
Monday, November 14, 2022
Monday, September 12, 2022
问题:氧化氮分离器破沫网材质是(),防止该网因稀硝酸腐蚀破碎,进入压缩...
Monday, September 12, 2022
Monday, September 12, 2022
Sunday, September 11, 2022
问题:在稀硝酸设备中,最适合稀硝酸生产的不锈钢为()。A、Cr18Ni9B、00Cr19Ni10C、0Cr18Ni9TiD、1Cr18Ni9...
Saturday, March 25, 2023
Monday, September 12, 2022
问题:手动调节气氨压力调节阀,而自动调节的气氨流量调节阀未动作,说明()。A、气氨流量调节阀失灵B、气氨压力调节阀失灵C、氨蒸发器A进料调节阀失灵D、氨蒸发器B进料调节阀失灵...
Thursday, January 4, 2024
Sunday, September 11, 2022