(来学网)地铁疏散通道出口处的疏散指示标志应设置在门洞边缘或门洞的上部,其上边缘距吊顶不应小于(),下边缘距地面不应小于()。.
  • A.
    (来学网)0.5m,1m
  • B.
    (来学网)0.5m,2m
  • C.
    (来学网)1m,0.5m
  • D.
    (来学网)1m,2m