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为避免误差做探究实验时常需计算平均值．下列实验不需要取平均值的是 A．探究蚂蚁的通讯b．酸雨对植物的影响c．测定种子的�芽率d．探究植物 Template






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tomski为避免误差做探究实验时常需计算平均值．下列实验不需要取平均值的是 a．探究蚂蚁的通讯b．酸雨对植物的影响c．测定种子的�芽率d．探究植物 coloring
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