设α={1，1，1}，β={1，2，0}，则下列结论中哪一个正确？（） -题库考试答案搜索网

设α={1，1，1}，β={1，2，0}，则下列结论中哪一个正确？（）

单选题

2021-09-05 19:45

A、α与β平行
B、α与β垂直
C、α·β=3
D、α×β={2，-1，-1}

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正确答案

C

试题解析

标签：第一章数学电气工程公共基础注册电气工程师（发输变电）公共基础

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