• 2022-06-28
    在大容器的水面下处开一小孔,则小孔处水流的流速为
    A: [img=53x32]1802fcac993f025.jpg[/img]
    B: [img=53x43]1802fcaca461d13.jpg[/img]
    C: [img=35x28]1802fcacadb5a0c.jpg[/img]
    D: [img=53x34]1802fcacbaf6fae.jpg[/img]