单选题:设α={1,1,1},β={1,2,0},则下列结论中哪一个正确?( ) 题目分类:公共基础 题目类型:单选题 查看权限:VIP 题目内容: 设α={1,1,1},β={1,2,0},则下列结论中哪一个正确?( ) A.α与β平行 B.α与β垂直 C.α·β=3 D.α×β={2,-1,-1) 参考答案: 答案解析:
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