A.0.5%~1% B.1%~1.5% C.1%~2% D.1.5%~2%
A.10m B.15m C.20m D.25m
A.直流無(wú)觸點(diǎn) B.直流有觸點(diǎn) C.交流無(wú)觸點(diǎn) D.交流有觸點(diǎn)