Thursday, September 15, 2022
Friday, June 2, 2023
Monday, October 30, 2023
Sunday, September 11, 2022
Thursday, September 15, 2022
Wednesday, January 24, 2024
Thursday, September 15, 2022
问题:什么叫喷灌均匀度?()A、喷灌范围内纵横两个方向的水量分布B、喷洒范围内的水量大小C、是指在喷灌面积上水量分布的均匀程度D、喷灌范围内的水滴的大小...
Friday, March 22, 2024
Monday, September 12, 2022
Sunday, March 31, 2024
Thursday, September 15, 2022
问题:设计灌溉渠道时,如果糙率系数取值偏小,就会使渠道断面偏小,从而影响渠道过水能力。...
Sunday, August 6, 2023
Thursday, September 15, 2022
Monday, September 12, 2022
Monday, June 12, 2023
Thursday, September 15, 2022
Sunday, March 31, 2024
Saturday, April 1, 2023
Sunday, March 24, 2024
问题:防治土壤盐碱化的水利技术不包括()。A、种植水稻B、井灌井排C、灌水冲洗D、放淤改良...
Wednesday, January 3, 2024