当被沾有HBsAg阳性血的针头刺伤时．立即应作的主要处理是() ["A．伤口立即涂以碘酒","B．给受伤者立即注射丙种球蛋白","C．受伤者立即抽血作乙型肝炎全套抗原抗体检测","D．乙型肝炎高价免疫血清注射","E．乙型肝炎疫苗注射"] 密闭式潴留导尿系统引起感染的危险因素中，哪一项最常见() ["A．潴留导尿持续1周","B．集尿袋位处膀胱水平之上","C．抗生素膀胱冲洗","D．集尿管扭结或阻塞","E．密闭系统的接头反复打开"] 调查医院感染的最佳方法() ["A．从医院微生物室获得病例来源","B．临床医师填报病例","C．专职护士到病室前瞻性发现病例","D．病室监控护士报告病例","E．专职护士到病案室从出院病历中找查病例"] 胸腺瘤的主要蔓延方式() ["A．血行转移","B．胸内外淋巴结转移","C．胸内扩散+血行转移","D．胸内局部扩散","E．胸膜转移"] 可引起副溶血性弧菌食物中毒的食物是()可引起沙门菌属食物中毒的主要食品是() ["A．肉类食品","B．海产品","C．两者皆有","D．两者皆无"] 下列哪种情况属于医院感染()