1, Kucatshangelwa ukusetshenziswa kwemvelo kanye nokufeza umphumela.Ukungcoliswa komoya okuvamile endlini 1) uthuli, igciwane, amagciwane, isikhunta nezibungu nezinye izinto ezingezwani nomzimba;(2) amagesi emvelo aguquguqukayo, njenge-formaldehyde, benzene, ammonia, njll.;(3) Ukungcoliswa kwemisebe okubangelwa igesi ye-radon kanye nendodakazi yayo...
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