单项选择题

两个二元向量: x=(1,0,0,0,0,0,0,0,0,0)y=(0,0,0,0,0,0,1,0,0,1),SMC=(),J=() A.
0,0.7 B.
1,0.7 C.
0.7,1 D.
0.7,0

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