A.輸入及變壓器工作正常 B.燈亮則蓄電池充電 C.輸出給蓄電池的平均電流 D.主電源發(fā)生故障
A.0.85(S)通—0.25(S)關(guān)—0.45(S)通—0.25(S)關(guān)—1.5(S)通—11.7(S)關(guān) B.0.65(S)通—0.25(S)關(guān)—0.65(S)通—0.25(S)關(guān)—1.5(S)通—11.7(S)關(guān) C.0.65(S)通—0.25(S)關(guān)—0.45(S)通—0.45(S)關(guān)—1.0(S)通—12.2(S)關(guān) D.0.85(S)通—0.25(S)關(guān)—0.45(S)通—0.25(S)關(guān)—1.0(S)通—12.2(S)關(guān)