[已过时]变电所中,220~380V所用配电屏室内,跨越屏前的裸导体对地高度及屏后通道内裸导体对地高度分别不得低于()
A.2300mm,1900mm B.2300mm,2200mm C.2500mm,2200mm D.2500mm,2300mm正确答案D
[已过时]变电所中,220~380V所用配电屏室内,跨越屏前的裸导体对地高度及屏后通道内裸导体对地高度分别不得低于()
A.2300mm,1900mm B.2300mm,2200mm C.2500mm,2200mm D.2500mm,2300mm正确答案D