如图是上海世博会使用的两种降温方法:冰块降温和喷雾降温。冰块

如图是上海世博会使用的两种降温方法:冰块降温和喷雾降温。冰块降温,是因为冰块变成水的   ▲   (填物态变化名称)过程需要从周围吸收大量的热;喷雾降温,是因为水雾在   ▲   (填物态变化名称)过程中也要从周围吸收大量的热.

 

答案

熔化  汽化或蒸发

解析:略

 

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