A、斷路器合閘、隔離開(kāi)關(guān)合閘 B、斷路器合閘、隔離開(kāi)關(guān)分閘 C、斷路器分閘、隔離開(kāi)關(guān)合閘 D、斷路器分閘、隔離開(kāi)關(guān)分閘