读坎儿井图，坎儿井是新疆古老的地下输水方式之一，坎儿井的水源主要来自______，之所以在地下输水，是为了_________刷题宝

题干

读坎儿井图，坎儿井是新疆古老的地下输水方式之一，坎儿井的水源主要来自______，之所以在地下输水，是为了________（）

A：河流水利于灌溉

B：海洋水利用地势自流

C：冰雪融水减少蒸发

D：大气降水节约成本

上一题下一题 0.0难度选择题更新时间:2018-09-07 03:47:34

答案(点此获取答案解析）

C

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