(来学网)甲、乙、丙级防火门的耐火极限分别不低于()。
  • A.
    (来学网)1.00h,1.00h,1.00h
  • B.
    (来学网)1.00h,1.50h,0.50h
  • C.
    (来学网)1.50h,1.00h,1.00h
  • D.
    (来学网)1.50h,1.00h,0.50h