A.氡≤150Bq/m3B.甲醛≤0.08mg/m3C.氨≤0.20mg/m3D.TVOC≤0.50mg/m3
A.甲醛B.氨C.TVOCD.苯
A.氡-222B.氡-220C.氡-219D.氡-221