26.已知三角形ABC的三边长为a、b、c,面积为S,三角形A1B1C1的三边长分别未a1、b1、c1,面积为S1,且a大于a1,b大于b1,c大于c1,则S与S1的大小关系一定是A.S大于S1 B.S小于S1 C.S=S1 D.不确定27.正实数x,y满足xy=
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![26.已知三角形ABC的三边长为a、b、c,面积为S,三角形A1B1C1的三边长分别未a1、b1、c1,面积为S1,且a大于a1,b大于b1,c大于c1,则S与S1的大小关系一定是A.S大于S1 B.S小于S1 C.S=S1 D.不确定27.正实数x,y满足xy=](/uploads/image/z/5179535-71-5.jpg?t=26.%E5%B7%B2%E7%9F%A5%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E4%B8%89%E8%BE%B9%E9%95%BF%E4%B8%BAa%E3%80%81b%E3%80%81c%2C%E9%9D%A2%E7%A7%AF%E4%B8%BAS%2C%E4%B8%89%E8%A7%92%E5%BD%A2A1B1C1%E7%9A%84%E4%B8%89%E8%BE%B9%E9%95%BF%E5%88%86%E5%88%AB%E6%9C%AAa1%E3%80%81b1%E3%80%81c1%2C%E9%9D%A2%E7%A7%AF%E4%B8%BAS1%2C%E4%B8%94a%E5%A4%A7%E4%BA%8Ea1%2Cb%E5%A4%A7%E4%BA%8Eb1%2Cc%E5%A4%A7%E4%BA%8Ec1%2C%E5%88%99S%E4%B8%8ES1%E7%9A%84%E5%A4%A7%E5%B0%8F%E5%85%B3%E7%B3%BB%E4%B8%80%E5%AE%9A%E6%98%AFA.S%E5%A4%A7%E4%BA%8ES1+B.S%E5%B0%8F%E4%BA%8ES1+C.S%3DS1+D.%E4%B8%8D%E7%A1%AE%E5%AE%9A27.%E6%AD%A3%E5%AE%9E%E6%95%B0x%2Cy%E6%BB%A1%E8%B6%B3xy%3D)
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