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如图,正方体ABCD-A1B1C1D1的棱长为1,线段B1D1上有两个动点E,F...
如图,正方体ABCD-A
1B
1C
1D
1的棱长为1,线段B
1D
1上有两个动点E,F,且EF=1,则四面体A-EFB的体积为
.
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考点分析:
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