题目如图所示电路,下列说法正确的是（ ）A.当断开S1S_{1}S1、闭合S2S_{2}S2时，电路处于短路状态B.当闭合S1S_{1}S1，断开S2S_{2}S2时，L1L_{1}L1发光，L2L_{2}L2不会发光C.当闭合S1S_{1}S1、S2S_{2}S2时，只有L1L_{1}L1会发光D.只闭合S1S_{1}S1，发现L1L_{1}L1和L2L_{2}L2都不发光，则故障可能是L2L_{2}L2短路知识点：串、并联电路的设计章节：未标注
