www.bzfxw.comICS27.010CCSF10DB11北京市地方标准DB11/T1135—2024代替DB11/T1135—2014供热系统有限空间作业安全技术规程Technicalspecificationforworksafetyinconfinedspacesforheatingsystem2024-09-23发布2025-01-01实施北京市市场监督管理局发布www.bzfxw.comDB11/T1135—2024I目次前言..................................................................................II1范围........................................
