【Daily Question】Question from the 20151124 issue
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This post was last edited by hjztbwg on 2015-12-1 10:22. Reward for participation: 2 wealth points. Reward for the correct answer: 9 Wealth. What is the allowable concentration limit of free formaldehyde, a pollutant in indoor air of residential areas? The answer is A: (A) ≤0.08mg/m3, (B) ≤0.12mg/m3, (C) ≤0.5mg/m3, (D) ≤0.09mg/m3
What is the concentration limit for the indoor air pollutant formaldehyde in residential areas? (A) ≤0.08mg/m3 (B) ≤0.12mg/m3 (C) ≤0.5mg/m3 (D) ≤0.09mg/m3
What is the concentration limit for the indoor air pollutant formaldehyde in residential areas? A (A) ≤ 0.08 mg/m3 (B) ≤ 0.12 mg/m3 (C) ≤ 0.5 mg/m3 (D) ≤ 0.09 mg/m3
What is the concentration limit for the indoor air pollutant formaldehyde in residential areas? A (A) ≤0.08mg/m3 (B) ≤0.12mg/m3 (C) ≤0.5mg/m3 (D) ≤0.09mg/m3
(A) ≤0.08mg/m3
A、≤0.08mg/m3------------------
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What is the concentration limit for the indoor air pollutant formaldehyde in residential areas? C