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2018年中考化学真题分类汇编1物质的构成和变化考点5物质的变化与性质1物质的变化1化学变化能量（无答案）.doc

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1物质的构成和变化 考点 5 物质的变化与性质（18 枣庄）20.化学反应不仅生成了新物质，还伴随着能量变化。下列事例中通过化学反应提供能量的是A.灯泡发光 B.风力发电 C.太阳能供热 D.蓄电池放电

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