安装了感光系统的新型路灯,能根据环境明暗程度自动调节灯光亮度。某兴趣小组为了研究路灯的感光系统,设计了甲、乙两个电路,如图所示。rt为光敏电阻 Template


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tomski安装了感光系统的新型路灯,能根据环境明暗程度自动调节灯光亮度。某兴趣小组为了研究路灯的感光系统,设计了甲、乙两个电路,如图所示。rt为光敏电阻 coloring