单项选择题
医务人员卫生手消毒应严格按照洗手六步法认真揉搓双手时间（），整个过程（）
A.＞15s，＞40s
B.＞15s，＞60s
C.＞20s，＞40s
D.＞20s，＞60s
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单项选择题
A.＞15s，＞40s
B.＞15s，＞60s
C.＞20s，＞40s
D.＞20s，＞60s
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