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如图,A(﹣5,0),B(﹣3,0),点C在y轴的正半轴上,∠CBO=45°,CD∥AB.∠CDA=90°.点P从点Q(4,0)出发,沿x轴向左以每秒1个单位长度的速度运动,运动时时间t秒. (1...
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