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(2分).“低碳---环保”是上海世博的主题理念,日本馆非常巧妙的体现了这个理念...

(2分).“低碳---环保”是上海世博的主题理念,日本馆非常巧妙的体现了这个理念。如图所示,这个名为“紫蚕岛”的别致建筑,它透光性高的双层外膜里面却藏有玄机,不需要消耗任何燃料就可以自主发电,供给展馆内使用。同时,在它的屋顶还有几个凹槽和突起的触角,它们会收集阳光和雨水,在炎炎夏日的时候它们会喷出薄雾,以此来降低气温,效果如同使用空调一样。

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(1)从能的角度说明它是怎么实现自主发电的。

 

 

(2)简述它喷雾降温的原理

 

 

 

 

(1)(2分)太阳能转化为电能   (2)(2分)雾状的小水珠汽化(或蒸发)吸收空气中的热量而降温。 【解析】
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