A.20 B.30 C.40 D.60
A.110m B.105m C.100m D.90m
A.0.2mm2 B.0.5mm2 C.1.0mm2 D.1.5mm2
A.1 B.2 C.3 D.5
A.10 B.15 C.18 D.20
A.防火分区，防火墙 B.与中庭相通的房间的门、窗处 C.过庭通道处 D.门洞通道处
A.2 B.1 C.0.5 D.0.2
A.≥400TVL B.≥350TVL C.≥270TVL D.≥200TVL
A.300 B.400 C.500 D.1000
A.100m2 B.80m2 C.60m2 D.40m2
