Tuesday, September 20, 2022
Saturday, September 17, 2022
天然气表压为0.35MPa,小时工况流量为120m/h,问小时标况流量是多少?...
Thursday, September 22, 2022
Thursday, September 15, 2022
采用机械鼓风的用气设备的燃气总管上,宜设置燃气压力下限自动切断阀。...
Thursday, September 22, 2022
Monday, September 19, 2022
燃烧器收缩管可增加空气的阻力,一般有流线型和锥形两种。...
Thursday, September 22, 2022
一般情况下,下列哪种燃气的爆炸下限最低,最容易发生爆炸()...
Thursday, September 22, 2022
Thursday, September 22, 2022
燃气供应单位应对燃气用户设施定期进行检查,有哪些规定?...
Thursday, September 22, 2022
Thursday, September 22, 2022
Wednesday, September 21, 2022
Thursday, September 22, 2022
热熔熔接机液压系统保养时液压油每工作()次应进行更换(至少每年更换一次)。...
Thursday, September 15, 2022
Monday, September 19, 2022
Sunday, September 18, 2022
单选题放散管应高出地面()m以上。A 2B 2.2C 2.4D 2.5...
Wednesday, May 15, 2024
在对铸铁管的外观进行检查时,管材管件的()应符合现行国家标准。...
Thursday, September 22, 2022
Saturday, September 17, 2022
某一小区天然气用户为1000户,每户的灶具热负荷为5000kcal/h,天然气热值为8400kcal/Nm,问该小区燃气...
Friday, September 16, 2022