A.Rdls断路 B.YK4故障 C.DLS故障
A.12:1 B.11:1 C.12.5:1
A.5 B.6 C.7
A.RD1熔断 B.RD2熔断 C.RD3熔断
A.50℃ B.60℃ C.70℃