试题与答案

用电压表测量电压,测得值为5.42V,改用标准电压表测量示值为5.60V,求前一只电

题型:问答题 简答题

题目:

用电压表测量电压,测得值为5.42V,改用标准电压表测量示值为5.60V,求前一只电压测量的绝对误差ΔU,示值相对误差rx和实际相对误差rA。

答案:

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参考答案:A解析:[知识点] 健康教育评价的种类与内容

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