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一、(10分)如图1,东湖中学想用离心泵将湖中的水抽到C处的养鱼池中.要求在30min内至少向养鱼池中输水120m~3,学校领导将以下几个需要解决的问题交给了科技小组.
I. (10 points) As shown in Figure 1, Donghu Middle School wants to use a centrifugal pump to pump the water from the lake to the aquarium at C. It is required to send at least 120m~3 water to the aquarium within 30min. School leaders will The following issues to be solved were handed to the science and technology team.