题目

如图所示的电路图中，能用电压表正确测出灯Ll两端电压的是（ ）A. B. C. D. 答案：【答案】B【解析】解：A、电压表并联在L1和L2两个灯泡两端，测量两个灯泡两端的总电压．不符合题意．B、电压表并联在L1两端，测量L1两端的电压．符合题意．C、电压表并联在L2两端，测量L2两端的电压．不符合题意．D、电压表并联在L1两端，但是电压表的接线柱接反了．不符合题意．故选B．Brandon worked very hard ________ he was admitted to his dream university.A.as ifB.so thatC.so long asD.for fear that