平行四边形ABCD中,对角线AC.BD相交于点O,若E,F是AC上两动点,分别从A,C两点以速度1CM/S 向C,A运动.平行四边形ABCD中,对角线AC、BD相交于点O,若E、F是AC两动点,分别从A、C两点以相同的速度1cm/s向C、A
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![平行四边形ABCD中,对角线AC.BD相交于点O,若E,F是AC上两动点,分别从A,C两点以速度1CM/S 向C,A运动.平行四边形ABCD中,对角线AC、BD相交于点O,若E、F是AC两动点,分别从A、C两点以相同的速度1cm/s向C、A](/uploads/image/z/9998973-45-3.jpg?t=%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2C%E5%AF%B9%E8%A7%92%E7%BA%BFAC.BD%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9O%2C%E8%8B%A5E%2CF%E6%98%AFAC%E4%B8%8A%E4%B8%A4%E5%8A%A8%E7%82%B9%2C%E5%88%86%E5%88%AB%E4%BB%8EA%2CC%E4%B8%A4%E7%82%B9%E4%BB%A5%E9%80%9F%E5%BA%A61CM%2FS+%E5%90%91C%2CA%E8%BF%90%E5%8A%A8.%E5%B9%B3%E8%A1%8C%E5%9B%9B%E8%BE%B9%E5%BD%A2ABCD%E4%B8%AD%2C%E5%AF%B9%E8%A7%92%E7%BA%BFAC%E3%80%81BD%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9O%2C%E8%8B%A5E%E3%80%81F%E6%98%AFAC%E4%B8%A4%E5%8A%A8%E7%82%B9%2C%E5%88%86%E5%88%AB%E4%BB%8EA%E3%80%81C%E4%B8%A4%E7%82%B9%E4%BB%A5%E7%9B%B8%E5%90%8C%E7%9A%84%E9%80%9F%E5%BA%A61cm%2Fs%E5%90%91C%E3%80%81A)
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