A.4 B.6 C.10 D.16
A.0.5 B.1 C.2 D.5
A.6 B.10 C.16 D.35
A.黄 B.绿 C.红 D.蓝
A.2.5 B.4 C.6 D.10
A.1 B.2 C.4 D.5
A.50 B.80 C.100 D.125
A.5 B.8 C.10 D.15
A.2200 B.2300 C.2500 D.2700
A.光电感烟探测器 B.感温探测器 C.离子感烟探测器 D.火焰探测器
A.15mm B.20mm C.25mm D.30mm
