题目

根据下图所示实物电路图，请用笔画线代替导线画出等效的电路图_____ 答案：【答案】【解析】由实物图知道，两灯泡并联，S1控制干路，S2控制L2所在支路，电路图如下：—Do you think it's going to rain over weekend? ? —　　 .? A.I don't believe　　　 B.I don't believe so　　 C.I believe not so　　　 D.I believe not?