Wednesday, April 12, 2023
Tuesday, October 24, 2023
问题:单选题在确定引水灌溉工程的规模及尺寸之前,需先进行灌区()计算。A 水量平衡B 水源的来水过程C 灌区的用水过程D 灌溉用水量
Saturday, October 28, 2023
Thursday, September 22, 2022
Thursday, September 22, 2022
问题:多选题下列()条件应考虑采用喷灌。A透水性弱的土壤B透水性强的土壤C地形坡度较陡D地形复杂地区E水源缺乏地区
Saturday, September 17, 2022
问题:单选题灌排相邻布置适用于()地形。A 平原地区B 地形微起伏地区C 地形向一侧倾斜的地区D 山丘区
Tuesday, September 20, 2022
Sunday, September 18, 2022
Thursday, September 22, 2022
Thursday, September 22, 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, February 1, 2024
Wednesday, September 21, 2022
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
Thursday, September 22, 2022
问题:问答题闭环控制与开环控制系统有哪些差异?各自适用条件如何?
Sunday, September 18, 2022
问题:多选题长畦分段灌的优点包括()A节水B省地C适应性强D易于推广E便于田间耕作
Thursday, September 22, 2022
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
Wednesday, September 21, 2022
Saturday, January 21, 2023