Tuesday, August 15, 2023
根据《城镇燃气设计规范》,埋入建筑物地板和墙中的铜管应是()A、覆塑铜管B、带有专用涂层的铜管C、薄壁铜管D、半硬态铜管...
Wednesday, October 5, 2022
Tuesday, August 15, 2023
《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-2006规定:调压器调节操作完成后应拧紧螺母,使拉杆处于()状态。A、受力B、不受力C、均衡受力D、平衡...
Saturday, April 13, 2024
根据《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-2006规定:城镇燃气设施包括()A、燃气储存设施B、燃气规范C、燃气输配和应用的场站D、燃气管网及用户设施...
Wednesday, January 31, 2024
Wednesday, October 12, 2022
根据《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-2006规定:生产作业临时放散火炬应高出地面()m以上。A、1.5B、2.0C、2.5D、3.0...
Sunday, June 11, 2023
Monday, September 12, 2022
根据国标GB50028,放散管管口应高出调压站屋檐最少()以上。A、1米B、0.5米C、0.3米...
Wednesday, October 12, 2022
Wednesday, September 6, 2023
地下燃气管道的检查时,应对沿聚乙烯塑料管道敷设的()及()进行检测。A、阀门B、可探示踪线C、信号源D、防腐层...
Wednesday, September 6, 2023
根据《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-20...
Monday, September 12, 2022
根据《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-2006规定:城镇燃气设施包括()A、燃气储存设施B、燃气规范C、燃气输配和应用的场站D、燃气管网及用户设施...
Thursday, March 28, 2024
Wednesday, February 14, 2024
德嘉线管道主干线材质为(),管径(),设计压力为()(表压)。...
Saturday, March 11, 2023
Sunday, June 11, 2023
Tuesday, September 13, 2022
根据《城镇燃气设施运行、维护和抢修安全技术规程》CJJ51-20...
Tuesday, September 13, 2022