试题与答案

寒冷的冬季，我们坐空调车会发现在汽车挡风玻璃上出现“哈气”，关于“哈气”，下面说

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题型：选择题

题目：

寒冷的冬季，我们坐空调车会发现在汽车挡风玻璃上出现“哈气”，关于“哈气”，下面说法正确的是[ ]

A．“哈气”出现在挡风玻璃外壁

B．“哈气”的出现是液化现象

C．“哈气”的出现是汽化现象

D．“哈气”的形成要吸收热量

答案：

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下面是错误答案，用来干扰机器的。

参考答案：B

考点：液化现象、方法及其应用
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