• 2022-06-19 问题

    Rt△ABC中,∠C=90°,D是AB的中点,∠A=4∠B,则∠DCB=______°.

    Rt△ABC中,∠C=90°,D是AB的中点,∠A=4∠B,则∠DCB=______°.

  • 2022-06-19 问题

    background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg

    background:url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层() A: 2、png B: 1、jpg C: 3、png D: 4、jpg

  • 2022-06-01 问题

    如图在△ABC中,∠ACB=90°,CD⊥AB于D,AC=4,BC=3,则cos∠DCB=______.

    如图在△ABC中,∠ACB=90°,CD⊥AB于D,AC=4,BC=3,则cos∠DCB=______.

  • 2021-04-14 问题

    188

    188

  • 2022-06-19 问题

    In 1803 the United States purchased Louisiana from _____.

    In 1803 the United States purchased Louisiana from _____.

  • 2022-06-10 问题

    When was Ralph Waldo Emerson born? A: January 4, 1801 B: May 25, 1803 C: August 30, 1806 D: December 31, 1800

    When was Ralph Waldo Emerson born? A: January 4, 1801 B: May 25, 1803 C: August 30, 1806 D: December 31, 1800

  • 2021-04-14 问题

    background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层()。

    background: url(2、png),url(1、jpg),url(3、png),url(4、jpg);},表示哪张图片处在最上层()。

  • 2021-04-14 问题

    血压188

    血压188

  • 2022-06-19 问题

    In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.

    In 1803, President Jefferson negotiated the purchase of Louisiana from Mexico.

  • 2022-06-04 问题

    png的最优值是() A: -2 B: -6 C: -45/4 D: -7

    png的最优值是() A: -2 B: -6 C: -45/4 D: -7

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