中科大自主招生试题,选择(选项顺序已记不清,共四道)第一题:a^2+b^2>0,则绝对值a>0且绝对值b>0的否命题是1.a^2+b^2
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![中科大自主招生试题,选择(选项顺序已记不清,共四道)第一题:a^2+b^2>0,则绝对值a>0且绝对值b>0的否命题是1.a^2+b^2](/uploads/image/z/10411620-60-0.jpg?t=%E4%B8%AD%E7%A7%91%E5%A4%A7%E8%87%AA%E4%B8%BB%E6%8B%9B%E7%94%9F%E8%AF%95%E9%A2%98%2C%E9%80%89%E6%8B%A9%EF%BC%88%E9%80%89%E9%A1%B9%E9%A1%BA%E5%BA%8F%E5%B7%B2%E8%AE%B0%E4%B8%8D%E6%B8%85%2C%E5%85%B1%E5%9B%9B%E9%81%93%EF%BC%89%E7%AC%AC%E4%B8%80%E9%A2%98%EF%BC%9Aa%5E2%2Bb%5E2%3E0%2C%E5%88%99%E7%BB%9D%E5%AF%B9%E5%80%BCa%3E0%E4%B8%94%E7%BB%9D%E5%AF%B9%E5%80%BCb%3E0%E7%9A%84%E5%90%A6%E5%91%BD%E9%A2%98%E6%98%AF1.a%5E2%2Bb%5E2)
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