A.0,0 B.0,1 C.1,1 D.1
A.清0,預(yù)設(shè)值TV B.清0,當(dāng)前值 C.保持不變,預(yù)設(shè)值TV D.保持不變,當(dāng)前值
A.通電,0 B.通電,預(yù)設(shè)值TV C.斷電,0 D.斷電,預(yù)設(shè)值TV