• 2022-06-19
    设有非零向量[img=30x28]1802eba2f644f58.png[/img], 若 [img=42x24]1802eba30000961.png[/img] 则必有:
    A: [img=123x29]1802eba30ab53b3.png[/img]
    B: [img=133x29]1802eba31389c1a.png[/img]
    C: [img=123x29]1802eba31c812b6.png[/img]
    D: [img=123x29]1802eba3247ba35.png[/img]