2011年全国中考物理分类汇编考点27_比热容_热机
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1.(2011安徽芜湖,第5题)国家“西气东输”工程正源源不断地向我市输送清洁能源——天然气,天然气燃烧时,可以将__________能转化为内能,已知天然气的热值为4×107J/m3,则每输送100m3的天然气,完全燃烧后就相当于向我市输送了_____________J的能量。
【答案】化学,4×109...点击查看全部>>
【答案】化学,4×109...点击查看全部>>
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