快呢快呢,一道科学电路题如图所示电路中,电源电压6V恒定,电流表量程为0~0.6A,电压表的量程为0~3V,灯L1和L2的规格分别为“6V 1.8W”和“6V 1.2W”,滑动变阻器R的规格为“50欧 1.5A”,不计温度对电

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