1.味精袋上标有“500+ -5克”字样中,+5表示( ),-5表示( )2.两个圆柱,它们的底面半径比是3:4,体积比是3:5,它们高的比是( ).3.判断题:组成比例的两个比不能由两对不同的互质数组成.(
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![1.味精袋上标有“500+ -5克”字样中,+5表示( ),-5表示( )2.两个圆柱,它们的底面半径比是3:4,体积比是3:5,它们高的比是( ).3.判断题:组成比例的两个比不能由两对不同的互质数组成.(](/uploads/image/z/3932984-56-4.jpg?t=1.%E5%91%B3%E7%B2%BE%E8%A2%8B%E4%B8%8A%E6%A0%87%E6%9C%89%E2%80%9C500%2B+-5%E5%85%8B%E2%80%9D%E5%AD%97%E6%A0%B7%E4%B8%AD%2C%2B5%E8%A1%A8%E7%A4%BA%EF%BC%88+%EF%BC%89%2C-5%E8%A1%A8%E7%A4%BA%EF%BC%88+%EF%BC%892.%E4%B8%A4%E4%B8%AA%E5%9C%86%E6%9F%B1%2C%E5%AE%83%E4%BB%AC%E7%9A%84%E5%BA%95%E9%9D%A2%E5%8D%8A%E5%BE%84%E6%AF%94%E6%98%AF3%EF%BC%9A4%2C%E4%BD%93%E7%A7%AF%E6%AF%94%E6%98%AF3%EF%BC%9A5%2C%E5%AE%83%E4%BB%AC%E9%AB%98%E7%9A%84%E6%AF%94%E6%98%AF%EF%BC%88+%EF%BC%89.3.%E5%88%A4%E6%96%AD%E9%A2%98%EF%BC%9A%E7%BB%84%E6%88%90%E6%AF%94%E4%BE%8B%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%AF%94%E4%B8%8D%E8%83%BD%E7%94%B1%E4%B8%A4%E5%AF%B9%E4%B8%8D%E5%90%8C%E7%9A%84%E4%BA%92%E8%B4%A8%E6%95%B0%E7%BB%84%E6%88%90.%EF%BC%88)
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