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.日時段表數(shù)B.年時區(qū)數(shù)C.公共假日數(shù)D.報警電量(金額)1限值
A.5VA;3WB.5VA;5WC.3VA;3WD.3VA;5W