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![1、一个容器能装500g的水,用它装某种液体,能装450g,则这种液体的密度是_______kg/m³.2、体积和质量相同的铝球、铁球和铜球,下列说法中正确的事( )A、铝球是实心的,而铁球和铜球一定是](/uploads/image/z/6915173-5-3.jpg?t=1%E3%80%81%E4%B8%80%E4%B8%AA%E5%AE%B9%E5%99%A8%E8%83%BD%E8%A3%85500g%E7%9A%84%E6%B0%B4%2C%E7%94%A8%E5%AE%83%E8%A3%85%E6%9F%90%E7%A7%8D%E6%B6%B2%E4%BD%93%2C%E8%83%BD%E8%A3%85450g%2C%E5%88%99%E8%BF%99%E7%A7%8D%E6%B6%B2%E4%BD%93%E7%9A%84%E5%AF%86%E5%BA%A6%E6%98%AF_______kg%2Fm%26sup3%3B.2%E3%80%81%E4%BD%93%E7%A7%AF%E5%92%8C%E8%B4%A8%E9%87%8F%E7%9B%B8%E5%90%8C%E7%9A%84%E9%93%9D%E7%90%83%E3%80%81%E9%93%81%E7%90%83%E5%92%8C%E9%93%9C%E7%90%83%2C%E4%B8%8B%E5%88%97%E8%AF%B4%E6%B3%95%E4%B8%AD%E6%AD%A3%E7%A1%AE%E7%9A%84%E4%BA%8B%EF%BC%88+%EF%BC%89A%E3%80%81%E9%93%9D%E7%90%83%E6%98%AF%E5%AE%9E%E5%BF%83%E7%9A%84%2C%E8%80%8C%E9%93%81%E7%90%83%E5%92%8C%E9%93%9C%E7%90%83%E4%B8%80%E5%AE%9A%E6%98%AF)
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