题目

如图所示电路，电源电压为6V，当S闭合时，电压表的读数如图，则电压表的量程用：             ，L1两端的电压为            V，L2两端的电压为           V。 答案：  0-3V  ；  1.5  ；  4.5  。例____ into use in April 2000, the hotline was meant for residents reporting water and heating supply breakdowns. A. Put    B. Putting     C. Having put   D. Being put