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如图所示为一种测量粉末状物质实际体积的装置，其中A容器的容积为VA＝300cm3，k是连通大气的阀门，C为一水银槽，通过橡皮管与容器B相通，连通A、B的管道很细，其容积可忽略．下面是测量某种粉末体积...
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高三下学期物理《》真题及答案
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