(来学网)采样前,滤膜质量为0.1000g,以30L/min流量采集10min,称量后滤膜质量为0.1010g,计算得空气中粉尘浓度为
  • A.
    (来学网)3.333mg/m^3
  • B.
    (来学网)3.33mg/m^3
  • C.
    (来学网)3.34mg/m^3
  • D.
    (来学网)3.30mg/m^3
  • E.
    (来学网)3.3mg/m^3