A.清洗—消毒—滅菌—烘干 B.清洗—消毒—烘干—滅菌 C.滅菌—清洗—烘干—消毒 D.消毒—清洗—滅菌—烘干
A.1:200 B.1:500 C.1:600 D.1:1000
A.1:200 B.1:500 C.1:1000 D.1:2000