A.X2與X1間電壓為AC105V B.X2與X3、X4間電壓為AC0V C.XI與X3、X4間電壓為AC0V D.XI與X3、X4間電壓為AC105V
A.經(jīng)過在分線盤測量電壓為:X2與X1、X3之間電壓為AC65V B.經(jīng)過在分線盤測量電壓為:X2與X4之間電壓為AC65V C.經(jīng)過在分線盤測量電壓為:X2與X1、X3之間電壓為AC0V D.經(jīng)過在分線盤測量電壓為:X2與X4之間電壓為AC0V