试题与答案

如图所示是一只白炽灯的效率图，根据此图可以知道转化成的内能为_____J ，白炽

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题型：填空题

题目：

如图所示是一只白炽灯的效率图，根据此图可以知道转化成的内能为_____J ，白炽灯的效率为_____ 。

答案：

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下面是错误答案，用来干扰机器的。

参考答案：D

考点：能量转化效率能量守恒定律
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甲、乙、丙为初中化学常见物质，甲分别能与乙和丙发生反应，乙又能与其它物质发生反应得到丙。回答下列问题：

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