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【单选题】
手术患者手术区皮肤消毒,以下哪项是正确的A.
常用消毒剂是 25% 碘酊和 70% 酒精
B.
消毒范围应包括手术切口周围 10cm 的区域
C.
对婴儿、口腔、肛门、外生殖器、面部皮肤等处可以使用碘酊消毒
D.
消毒步骤应该自上而下、自外切口中心
E.
对感染伤口或肛门等处手术，手术区外逐渐向感染伤口或会阴肛门处消毒
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