在rt△ABC中,角ACB=90°,AC=3,BC=4,过点B作射线BB1‖AC.动点D从点A出发沿射线AC方向以每秒5个单位的速度过动点D作DH⊥AB于H,过点E作EF⊥AC交射线BB1于F,G是EF中点,连结DG,设点D运动的时间为t秒(1)当t
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![在rt△ABC中,角ACB=90°,AC=3,BC=4,过点B作射线BB1‖AC.动点D从点A出发沿射线AC方向以每秒5个单位的速度过动点D作DH⊥AB于H,过点E作EF⊥AC交射线BB1于F,G是EF中点,连结DG,设点D运动的时间为t秒(1)当t](/uploads/image/z/5503628-20-8.jpg?t=%E5%9C%A8rt%E2%96%B3ABC%E4%B8%AD%2C%E8%A7%92ACB%3D90%C2%B0%2CAC%3D3%2CBC%3D4%2C%E8%BF%87%E7%82%B9B%E4%BD%9C%E5%B0%84%E7%BA%BFBB1%E2%80%96AC.%E5%8A%A8%E7%82%B9D%E4%BB%8E%E7%82%B9A%E5%87%BA%E5%8F%91%E6%B2%BF%E5%B0%84%E7%BA%BFAC%E6%96%B9%E5%90%91%E4%BB%A5%E6%AF%8F%E7%A7%925%E4%B8%AA%E5%8D%95%E4%BD%8D%E7%9A%84%E9%80%9F%E5%BA%A6%E8%BF%87%E5%8A%A8%E7%82%B9D%E4%BD%9CDH%E2%8A%A5AB%E4%BA%8EH%2C%E8%BF%87%E7%82%B9E%E4%BD%9CEF%E2%8A%A5AC%E4%BA%A4%E5%B0%84%E7%BA%BFBB1%E4%BA%8EF%2CG%E6%98%AFEF%E4%B8%AD%E7%82%B9%2C%E8%BF%9E%E7%BB%93DG%2C%E8%AE%BE%E7%82%B9D%E8%BF%90%E5%8A%A8%E7%9A%84%E6%97%B6%E9%97%B4%E4%B8%BAt%E7%A7%92%EF%BC%881%EF%BC%89%E5%BD%93t)
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