初三物理19.1家庭电路 知识点精讲

https://v.qq.com/txp/iframe/player.html?vid=l036799hirr&width=500&height=375&auto=0

https://v.qq.com/txp/iframe/player.html?vid=t0346kc34a2&width=500&height=375&auto=0

点此看名师直播答疑讲座https://v.qq.com/txp/iframe/player.html?vid=h0346i7ksbs&width=500&height=375&auto=0

请复制 http://t.cn/Ryh8lNh 打开下载配套的课件，点此看名师直播课，或点击左下阅读原文查看全部教程