1 x2+y2=1,m2+n2=1,xm+ny=0时,xy+mn的值为:2 三角形ABC的三条高为下列选项中的数,使三角形ABC为锐角三角形的是A 根号2,根号3,根号5 B 根号5,根号11,根号12 C 10,15,16 D 7,10,113 相等的两圆交于A,B两点,过B任
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![1 x2+y2=1,m2+n2=1,xm+ny=0时,xy+mn的值为:2 三角形ABC的三条高为下列选项中的数,使三角形ABC为锐角三角形的是A 根号2,根号3,根号5 B 根号5,根号11,根号12 C 10,15,16 D 7,10,113 相等的两圆交于A,B两点,过B任](/uploads/image/z/1036661-5-1.jpg?t=1+x2%2By2%3D1%2Cm2%2Bn2%3D1%2Cxm%2Bny%3D0%E6%97%B6%2Cxy%2Bmn%E7%9A%84%E5%80%BC%E4%B8%BA%EF%BC%9A2+%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E4%B8%89%E6%9D%A1%E9%AB%98%E4%B8%BA%E4%B8%8B%E5%88%97%E9%80%89%E9%A1%B9%E4%B8%AD%E7%9A%84%E6%95%B0%2C%E4%BD%BF%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E4%B8%BA%E9%94%90%E8%A7%92%E4%B8%89%E8%A7%92%E5%BD%A2%E7%9A%84%E6%98%AFA+%E6%A0%B9%E5%8F%B72%2C%E6%A0%B9%E5%8F%B73%2C%E6%A0%B9%E5%8F%B75+B+%E6%A0%B9%E5%8F%B75%2C%E6%A0%B9%E5%8F%B711%2C%E6%A0%B9%E5%8F%B712+C+10%2C15%2C16+D+7%2C10%2C113+%E7%9B%B8%E7%AD%89%E7%9A%84%E4%B8%A4%E5%9C%86%E4%BA%A4%E4%BA%8EA%2CB%E4%B8%A4%E7%82%B9%2C%E8%BF%87B%E4%BB%BB)
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