2009年冬天甲型H1N1在全世界漫廷,患者人数和死亡人数不断上升,为针对甲型H1N1在中国的漫廷,我国生产出了世界上第一支疫苗,并加强医院的救治工作。如图所示是改造后的医院病房和护士值班室的示意图,病人需要护理时,只要按床边的接钮开关能及时通知护士:1号床的病人按下开关S1,护士值班室的灯L1亮,2号床的病人按下开关S2,护士值班室的灯亮L2,下列电路符合要求的是(  )                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

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