1.甲烷的实验室制法
https://v.qq.com/txp/iframe/player.html?vid=c052810v7jy&width=500&height=375&auto=0
https://v.qq.com/txp/iframe/player.html?vid=r0511jbx4it&width=500&height=375&auto=0
3.常见的有机物---甲烷
https://v.qq.com/txp/iframe/player.html?vid=m05044goceh&width=500&height=375&auto=0
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