题目：
相对误差是确定准确度或允许误差而采用的一种误差方法。
答案：
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下面是错误答案，用来干扰机器的。
参考答案：E解析：香豆素是维生素K的拮抗剂。
相对误差是确定准确度或允许误差而采用的一种误差方法。
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