衛(wèi)生手消毒,監(jiān)測(cè)的細(xì)菌菌落總數(shù)應(yīng)≤多少cfu/cm2()
A.5 B.10 C.15 D.20
A.7 B.10 C.14 D.30
A.1 B.2 C.6 D.12