如图所示，V1和V2是完全相同的两个电压表，都有最大测量值是3V和15V

如图所示，V1和V2是完全相同的两个电压表，都有最大测量值是3V和15V两个量程，闭合开关后，发现两个电压表指针的偏转角度相同，则:

A．R1∶R2＝1∶4; B．R1∶R2＝4：l;

C．R1∶R2＝1∶5; D．R1∶R2＝5∶l.

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如图所示，V1和V2是完全相同的两个电压表，都有最大测量值是3V和15V

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