A.線徑1.5mm2護(hù)套線B.線徑2.5mm2護(hù)套線C.線徑1.5mm2塑銅線D.線徑2.5mm2塑銅線
A.數(shù)據(jù)層B.應(yīng)用層C.網(wǎng)絡(luò)通信層D.設(shè)備層
A.日時(shí)段表數(shù)B.年時(shí)區(qū)數(shù)C.公共假日數(shù)D.報(bào)警電量(金額)1限值