• 2022-06-01
    Known vector [img=223x30]1803b721d736bf3.png[/img] , the curl of [img=14x24]1803b721df718dc.png[/img] at point [img=87x25]1803b721e7b2f8a.png[/img]is ( )
    A: [img=29x25]1803b721eff6fe8.png[/img]
    B: [img=90x25]1803b721f80db92.png[/img]
    C: [img=85x25]1803b72201de9f8.png[/img]
    D: [img=15x25]1803b7220aac252.png[/img]
  • 举一反三