Since it is difficult to test for every potential pollutant in the indoor air of

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试卷: WELL AP v2模拟题 B卷[查看]
Since it is difficult to test for every potential pollutant in the indoor air of a building, what easily detectable pollutant serves as a proxy for other indoor pollutants?既然很难对建筑物室内空气中的每一种潜在污染物进行测试，那么哪些易于检测的污染物可以替代其他室内污染物？
A: Humidity湿度
B: Carbon Dioxide二氧化碳
C: PM 2.5
D: Carbon Monoxide一氧化碳

参考答案: B