题目内容

（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

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（课前测）喷灌系统按管道可移动程度分、、。

（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

2 Firms have found both internet and television to be well suited to corporate advertising.

A. 对
B. 错