• 2022-06-19
    设有非零向量[img=30x28]1802d0d59c165ef.png[/img], 若 [img=42x24]1802d0d5a4f29b9.png[/img] 则必有:
    A: [img=123x29]1802d0d5aedb8ac.png[/img]
    B: [img=133x29]1802d0d5b7c79d9.png[/img]
    C: [img=123x29]1802d0d5c034202.png[/img]
    D: [img=123x29]1802d0d5c806ffb.png[/img]