【单选题】【消耗次数：1】
某数控系统采用数据采样插补算法。若加工圆弧，以下那种情况插补误差最大。（）
①
F＝150(mm/min)R=70mm
②
F=240(mm/mim)R=70mm
③
F＝150(mm/min)R=100mm
④
F=240(mm/mim)R=100mm
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