题目内容
(请给出正确答案)
[单选题]
《分析实验室用水规格和试验方法》将实验室用水分为三个等级,各级别25℃电导率为()
A.一级水≤0.1μS /cm;二级水 ≤1.0μS /cm;三级水≤5.0μS/cm
B.一级水≤0.01μS/cm;二级水≤0.1uS/cm;三级水≤0.5μS/cm
C.一级水≤5.0μS/cm;二级水 ≤1.0μS /cm;三级水≤0.1μS/cm
D.一级水≤0.01μS /cm;二级水≤0.1μS/cm;三级水≤1.0μS/cm
答案
B、一级水≤0.01μS/cm;二级水≤0.1uS/cm;三级水≤0.5μS/cm
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