单项选择题
A.湿度B.温度C.质量D.压强
A.2.2m3/(h·人)B.2.3m3/(h·人)C.2.4m3/(h·人D.2.5m3/(h·人)
A.20~40m3/(h·人)B.30~50m3/(h·人)C.40~60m3/(h·人)D.50~70m3/(h·人)