下列情况中必须进行手消毒的是()
A.无菌操作后
B.使用厕所前后
C.护理免疫力低下的患者之前
D.实施侵入性医疗护理操作前后
E.护理多重耐药菌感染的患者后
参考答案:C, D, E
I should say sorry to you but I ____trouble.
A.did not mean causing
B.did not mean to cause
C.meant causing
D.meant to cause
对流层