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水泵气蚀余量(Hsv)是指在水泵进口处单位重量液体所具有的超过该工作温度时汽化压力的（） ,用米水柱表示。
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水泵气蚀余量(Hsv)是指在水泵进口处单位重量液体所具有的超过该工作温度时汽化压力的（） ,用米水柱表示。
A、吸水高度
B、富余能量
C、饱和蒸汽压力
D、水的温度差
时间：2021-07-17 23:54
关键词：
给排水工程技术
高起专
水泵风机与站房
2020年第二学期补考
答案解析
B
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水泵的泵壳铭牌上简明列出了水泵在设计转速下运转,( )时的流量、扬程、轴功率及允许吸上真空高度或气蚀余量值。( )
水泵气蚀余量(Hsv)是指在水泵进口处单位重量液体所具有的超过该工作温度时汽化压力的（） ,用米水柱表示。
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水泵气蚀余量(Hsv)是指在水泵进口处单位重量液体所具有的超过该工作温度时汽化压力的( )，用米水柱表示。
水泵的泵壳铭牌上简明列出了水泵在设计转速下运转，( )时的流量、扬程、轴功率及允许吸上真空高度或气蚀余量值。
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