Friday, September 16, 2022
问题:对患病鱼虾进行病原体检查时,材料应该是()或();检查顺序是:先...
Friday, September 16, 2022
问题:鳃片指环虫的头部背部有()个黑色眼点。A、1B、4C、3D、2...
Tuesday, July 18, 2023
Monday, September 12, 2022
问题:水产养殖中常用的环境改良剂有哪些?其主要作用是什么?...
Monday, September 12, 2022
Monday, September 12, 2022
Thursday, September 15, 2022
Monday, September 12, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Tuesday, July 18, 2023
Monday, September 12, 2022
Monday, September 12, 2022
Friday, September 16, 2022
Friday, March 17, 2023
问题:引起水产动物孢子虫病的主要有()、()、()、()四类,其中危害最大的是()。...
Saturday, June 3, 2023
Monday, September 12, 2022
Friday, February 3, 2023
Friday, September 16, 2022
Wednesday, November 1, 2023