(课前测)以下关于喷灌特点的说法,正确的有
A. 灌水均匀度高
B. 对地形的适应性强
C. 节水
D. 属局部灌溉方法
E. 投资大
(课前测)当相邻喷头同时喷洒时,各喷头湿润面积有一定重叠,这时的实际喷灌强度小于单喷头单独喷洒时的喷灌强度。
A. 对
B. 错
1. Studies have found that larger firms are much more prevalent users of corporate advertising than smaller firms.
A. 对
B. 错