以下为句子列表：
英文: Based on the water supply risk and its variable process of Dalian city, this paper proposes a cost-benefit analysis method for flood resources to inquire into the control range of the reservoir's flood limit water level, according to the use course of the
中文: 摘要以大连市碧流河水库为例，根据大连市供用水系统的风险及其变化过程，分析超蓄洪水资源的利用情况及其效益，并在对抬高水库汛限水位造成的淹没损失分析的基础上，利用边际成本分析方法确定控制的范围。
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