(1.5 分)
________is NOT provided in the specially protected fire section.
A.Fire detection system B.Activating fire alarms C.Closing of valves on fire doors D.Shutting down of fuel ventilating fans正确答案A
(1.5 分)
________is NOT provided in the specially protected fire section.
A.Fire detection system B.Activating fire alarms C.Closing of valves on fire doors D.Shutting down of fuel ventilating fans正确答案A
