小明同学几乎每天都要乘公交车上学,善于观察的他发现,无论盛夏

小明同学几乎每天都要乘公交车上学,善于观察的他发现,无论盛夏还是严冬,在装有空调的公交车玻璃窗上,都会有小水滴附着在上面。那么,夏天小水珠附着在玻璃的_ __,冬天小水珠附着在玻璃的_________。(选填“内表面”或“外表面”)。

答案

外表面  内表面

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