对于采用自然通风的工程,检测前应对外关闭门窗24h的项目是()
A氨
B甲醛
C氡
D苯
第2题
甲醛检测的AHMT分光光度法的测量范围是()
A0.1~1.5g/5ml;V=10L,0.01~0.15mg/m3
B0.2~3.2g/2ml;V=20L,0.02~0.3mg/m3
C1.0~35.0g/10ml;V=10L,0.02~0.7mg/m3
D0.5~10g/2ml;V=20L,0.02~0.3mg/m3
第3题
某老年活动中心室内环境质量验收,其甲醛和氨的验收标准分别是()
A0.08mg/m3,0.5mg/m3
B0.12mg/m3,0.2mg/m3
C0.08mg/m3,0.2mg/m3
D0.12mg/m3,0.5mg/m3
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