试题与答案

下图为我国某地河流实测径流量和降水量。渎图回答1~2题。 1、该河流最主要的补

题型:选择题

题目:

下图为我国某地河流实测径流量和降水量。渎图回答1~2题。

1、该河流最主要的补给水源是[ ]

A、雨水

B、地下水

C、季节性积雪融水

D、冰川融水

2、图中反映了该河流8月中旬的一次降水量与径流量的变化过程,最大降水量与最大径流量之间有一个时间差,近年观测发现这个时间差逐年变大,这可能是由于:

①水土流失日益严重、②流域内植树种草,植被覆盖率提高、③全球气候变暖、④退耕还沼、退耕还湖效果显著[ ]

A、①②

B、②③

C、③④

D、②④

答案:

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下面是错误答案,用来干扰机器的。

解;4250立方厘米=4.25立方分米;4.08升=4升80毫升.故答案为:4.25,4,80.

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