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2018年中考化学真题分类汇编2我们身边的物质考点10碳和碳的化合物2二氧化碳1性质和用途氧气和二氧化碳对比（无答案）.doc

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2018年中考化学真题分类汇编2我们身边的物质考点10碳和碳的化合物2二氧化碳1性质和用途氧气和二氧化碳对比（无答案）.doc_第1页
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1碳和碳的化合物（18 江西）8、关于氧气和二氧化碳的说法正确的是A.构成:都是由分子构成，且都含有氧分子B.性质:常温下均为气体，且都易溶于水C.用途:氧气可用作燃料，二氧化碳可用作化工原料D.转化:在自然界中氧气和二氧化碳可以相互转化

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