问题 单项选择题

下面关于实验室检验误差说法正确的是()

A.实验室质量控制的核心是杜绝试验误差

B.实验室的检验误差是很难避免的,它是客观存在的

C.运用精密的仪器,先进的方法,可以保证实验室结果无误差

D.误差是测定结果与某个三级医院实验室测定结果之间的差值

E.误差大小反映了结果的精密程度

答案

参考答案:B

解析:

在单次测量时,每个测量都会显示出某种不准确的程度,即它与真值的偏离。实际上,一个即使没有系统误差的测量系统也不可能产生准确的单次测量值,因为随机误差为零的几率是零。所以实验室的检验误差是很难避免的,它是客观存在的。

【考点】:准确度

完形填空
完形填空。

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判断题