问题:填空题在南北方向地面坡度较平缓的情况下,通常沿地面坡度布置,也就是畦田的长边方向与地面等高线()...
Saturday, January 21, 2023
问题:单选题悬着毛管水达到最大时的土壤含水率称之为()A 最大分子持水率B 毛管持水量C 田间持水率D 饱和含水率...
Tuesday, October 24, 2023
Saturday, October 28, 2023
Wednesday, April 12, 2023
问题:单选题当地下水埋深超过()时,补给量很小,可以忽略不计。A 1.5mB 2.0mC 2.5mD 3.0m...
Tuesday, July 25, 2023
Tuesday, April 11, 2023
Sunday, September 18, 2022
问题:目前,国内排水暗管、暗沟有多种结构形式,经试验比较成功的形式有哪些?...
Thursday, September 15, 2022
Saturday, January 21, 2023
Sunday, September 18, 2022
Tuesday, September 20, 2022
问题:填空题喷灌系统输水骨干管网布置形式主要有()、()和()。...
Tuesday, January 3, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Saturday, October 28, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022