新生儿胃容量小,为30~35mL,生长发育至6个月时,胃容量约增至()。 ["100mL","200mL","300mL","400mL","500mL"]
沙门菌的抗原容易发生变异,变异的种类有()。 ["H-O变异","S-R变异","V-w变异","以上都是","以上均不对"]
荧光抗体染色技术不包括下列哪一种?() ["直接法","间接法","补体法","SPA免疫荧光法","ELISA法"]
以下哪些是副溶血性弧菌食物中毒的诊断要点() ["A、发病前24小时食用过海产品","B、主要症状为腹痛、腹泻、恶心、呕吐等急性胃肠炎症状","C、由中毒食品、患者腹泻便或呕吐物中检出副溶血性弧菌","D、临床医师做了诊断","E、病人严重脱水"]
下列哪一项不是大肠杆菌耐热肠毒素的特性?() ["对热稳定,100℃加热20分钟仍不被破坏","由STa和STb两个活性部分组成","STb为主要毒性所在","启动鸟苷环化酶","启动腺苷环化酶"]
怎样防治根结线虫病?