夏天、从冰箱中取出瓶装矿泉水，过一会儿，会发现瓶外壁“出汗”，这是（）A．水从瓶中渗出来的结果B．空气遇冷液化的现象C．空气中的水蒸气遇冷液化的现象D．空气中的水蒸气遇冷凝华-物理

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• 夏天打开冰箱门，常可看到冷冻室里冒出一股白雾，这是：[]A、冰箱里原有的水蒸气凝结成的小水滴B、冰箱内食物中的水分遇到高温空气后，蒸发形成的水蒸气C、空气中的水蒸气降温-九年级物理
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