考试
2021-02-25 04:26:29

(单选题)待测水样中铁含量估计为2~3mg/L,水样不经稀释

题目描述

A1,2,3,4,5mg/L

B2,4,6,8,10mg/L

C100,200,300,400,500μg/L

D200,400,600,800,1000μg/L

答案解析

[db:答案解析]

A

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