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半径为2的球面上有A,B,C,D四点,且AB,AC,AD两两垂直,则三个三角形面...
半径为2的球面上有A,B,C,D四点,且AB,AC,AD两两垂直,则三个三角形面积之和S△ABC+S△ACD+S△ADB的最大值为( )
A.4
B.8
C.16
D.32
考点分析:
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