一道高二数学选择题//////////////////////////////////////////在空间四边形ABCD中 AB AC AD两两垂直 则以下结论不成立的是A |AB+AC+AD|=|AB+AC-AD|B |AB+AC+AD|^2=|AB|^2+|AC|^2+|AD|^2C (AB+AD+AC)*BC=0D AB*CD=AC*BD=AD*BC(^2表示
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![一道高二数学选择题//////////////////////////////////////////在空间四边形ABCD中 AB AC AD两两垂直 则以下结论不成立的是A |AB+AC+AD|=|AB+AC-AD|B |AB+AC+AD|^2=|AB|^2+|AC|^2+|AD|^2C (AB+AD+AC)*BC=0D AB*CD=AC*BD=AD*BC(^2表示](/uploads/image/z/6081435-27-5.jpg?t=%E4%B8%80%E9%81%93%E9%AB%98%E4%BA%8C%E6%95%B0%E5%AD%A6%E9%80%89%E6%8B%A9%E9%A2%98%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%2F%E5%9C%A8%E7%A9%BA%E9%97%B4%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD+AB+AC+AD%E4%B8%A4%E4%B8%A4%E5%9E%82%E7%9B%B4+%E5%88%99%E4%BB%A5%E4%B8%8B%E7%BB%93%E8%AE%BA%E4%B8%8D%E6%88%90%E7%AB%8B%E7%9A%84%E6%98%AFA+%7CAB%2BAC%2BAD%7C%3D%7CAB%2BAC-AD%7CB+%7CAB%2BAC%2BAD%7C%5E2%3D%7CAB%7C%5E2%2B%7CAC%7C%5E2%2B%7CAD%7C%5E2C+%28AB%2BAD%2BAC%29%2ABC%3D0D+AB%2ACD%3DAC%2ABD%3DAD%2ABC%28%5E2%E8%A1%A8%E7%A4%BA)
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