下列哪种细菌引起的疾病俗称“冰箱病”?() ["空肠弯曲菌","鼠伤寒沙门菌","假结核耶尔森菌","小肠结肠炎耶尔森菌","鼠疫耶尔森菌"]
体内转运一碳单位的载体是() ["叶酸","维生素B12","四氢叶酸","血红蛋白","S-腺苷甲硫氨酸"]
显微镜构造的两大部分是()。 ["光学系统和机械系统","接物镜和接目镜","高倍镜和低倍镜","反光镜和电源","镜头和照明装置"]
对于霍乱弧菌在庆大霉素琼脂选择培养在平皿上的菌落形态特征,下列说法中哪个是不正确的?() ["菌落带灰色","半透明","扁平稍隆起","菌落边缘干燥","圆形"]
一个生物样品的含氮量为5%,它的蛋白质含量正确的是()。 ["38.0%","8.80%","16.0%","12.50%","31.25%"]
怎样防治棕榈干腐病?