A.90° B.180° C.270° D.360°
A.≥125mm(對(duì)12kV) B.≥360mm(對(duì)40.5kV) C.≥120mm(對(duì)12kV) D.≥300mm(對(duì)40.5kV)
A.工作 B.試驗(yàn) C.合閘 D.隔離