Thursday, September 22, 2022
问题:单选题下列甲壳类(鱼类)疾病中属于一类动物疫病的是( )。A 白斑综合征B 草鱼出血病C 桃拉综合征D 鮰类肠败血症...
Thursday, May 4, 2023
问题:主要在鱼体内寄生,治疗较难,应提倡以防为主的是()...
Saturday, September 17, 2022
问题:为了诊断斑节对虾杆状病毒病,样品的采集通常不包括( )。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:药物在治疗剂量时,出现与治疗无关的作用,被称为( )。...
Tuesday, September 20, 2022
Thursday, September 15, 2022
Thursday, September 15, 2022
Thursday, September 22, 2022
问题:外源性化学物质按一定方式或途径与机体接触,能使机体开始出现某种最轻微的异常改变所需要的最低剂量,称为( )。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:对于无症状的疑似鲤春病毒血症的患鱼通常取其( )组织进行检测。...
Friday, September 16, 2022
问题:单选题寄生体表,以吸盘附着,可伸缩的口刺刺人宿主皮肤,将毒液注入宿主,产生炎症和出血,病鱼焦躁不安,急剧狂游跳跃,食欲减退,消瘦的是()A 大中华鳋病B 多态锚头鳋病C 鱼鲺D 鱼怪病...
Friday, November 3, 2023
Tuesday, September 20, 2022
Monday, September 19, 2022
问题:淡水鱼细菌性败血症感染途径主要以水和淤泥为传播媒介,可经损伤的( )侵入鱼体。...
Thursday, September 15, 2022
问题:皮肤和黏膜上皮发生较小损伤后一般可以再生达到完全修复,属于( )。...
Thursday, September 22, 2022