下列何种微生物在鸡胚卵黄囊中生长良好?() ["支原体","军团菌","沙眼衣原体","肺炎链球菌","流感嗜血杆菌"]
核清洁度分为三级,其中要求等级最高的是() ["A、A级","B、B级","C、C级"]
观测误差按性质可分为系统误差和偶然误差两类。
HBV主要有3种主要抗原成分,这3种主要抗原成分是下列哪3种?() ["HBrAg,HBsAg,HBcAg","HBsAg,HBcAg,HBrAg","HBsAg,HBcAg,HBeAg","HBrAg,HBcAg,HBaAg","HBsAg,HBeAg,HBaAg"]
下列不是厌氧培养法的是() ["庖肉培养法","烛缸培养法","硫乙醇酸盐培养法","气体置换法","焦性没食子酸法"]
WHO提出的癌症八大早期信号。