单项选择题

灌溉制度的内容，包括灌水定额、灌溉定额、灌水时间（）

A.灌水天数
B．灌溉亩数
C．灌水次数

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1、When exporting goods, it is essential to arrange insurance cover in case the goods are lost or damaged in transit. 2、If we do not receive payment by the end of this month，we will have no alternative but to take legal action． 3、Party B has the right to cancel the contract with a written notice to Party A under the following conditions．

答案： A

单项选择题

灌水定额是指（）

A.播种前和全生长期内，单位面积上的总灌水量
B．单位面积上的一次灌水量
C．灌区总灌溉面积上的一次灌水量