用于初步鉴别肠道致病菌和非肠道致病菌的试验是() ["蔗糖发酵试验","乳糖发酵试验","葡萄糖发酵试验","甲基红反应试验","枸橼酸利用试验"]
大肠埃希菌可以合成的维生素是() ["维生素B","维生素C","维生素K","维生素B和维生素K","维生素E"]
沙门菌的Vi抗原是() ["鞭毛素","脂多糖","一种外膜蛋白","菌毛主要亚单位","荚膜多糖"]
下列哪一项不是肠产毒型大肠埃希菌的特性() ["常见于婴幼儿和旅游者腹泻","致病物质包括不耐热肠毒素","致病物质包括耐热肠毒素","可以是轻度腹泻,也可呈严重的霍乱样症状","血性结肠炎"]
皮下出血的检查
蜘蛛痣的检查方法