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（通用版）2019年中考数学总复习第三章函数第14讲二次函数的应用（讲本）课件.ppt

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题组训练 1.小明家的洗手盆上装有一种抬启式水龙头(如图1)，完全开启后，水流路线呈抛物线，把手端点A，出水口B和落水点C恰好在同一直线上，点A至出水管BD的距离为12 cm，洗手盆及水龙头的相关数据如图2所示，现用高10.2 cm的圆柱型水杯去接水，若水流所在抛物线经过点D和杯子上底面中心E，则点E到洗手盆内侧的距离EH为 cm.,B,B,150,25,

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