问题:淡水捕捞学是研究捕捞内陆水域中各种经济鱼类和虾、蟹等水产品的一门()学科。
Friday, September 29, 2023
Wednesday, February 7, 2024
问题:水平缩结系数越大,目脚上所受的张力也越大,网衣沉降速度越快,故围网装配采用较大的水平缩结系数。
Monday, December 18, 2023
问题:网赶的原则是(),(),(),由浅到深,由宽到窄,纵横交错。
Wednesday, February 7, 2024
Monday, December 18, 2023
Tuesday, December 13, 2022
Wednesday, March 27, 2024
Monday, March 4, 2024
Saturday, November 18, 2023
Monday, March 4, 2024
问题:纤维材料的鉴别方法有()、()、()、()、试剂色法五种。
Wednesday, March 27, 2024
Tuesday, March 5, 2024
Monday, March 4, 2024
Monday, March 4, 2024
Sunday, April 16, 2023
问题:网片耗线量的计算方法有()、()、按万目重公式计算、按网片网线的消耗量计算、按网目耗线量计算。
Monday, December 18, 2023
Tuesday, March 5, 2024
Monday, March 6, 2023
Wednesday, February 7, 2024