在空气定点采样时,收集器应放在工人工作时的呼吸带,一般情况下距地面的距离是() A.

题型:单项选择题 A1/A2型题

问题:

在空气定点采样时,收集器应放在工人工作时的呼吸带,一般情况下距地面的距离是()

A.0.5m

B.1.5m

C.5m

D.8m

E.2m

考点:理化检验技术(主管技师)相关专业知识相关专业知识题库
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