• 2022-06-19
    已知[img=41x27]180345beaacd3da.png[/img]为非零向量,且满足[img=142x28]180345beb2c3024.png[/img], 则必有
    A: [img=78x25]180345bebacf53a.png[/img]
    B: [img=78x25]180345bec3c24ed.png[/img]
    C: [img=69x23]180345becc7b084.png[/img]
    D: [img=78x25]180345bed5288ca.png[/img]