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2018-01-17View Original

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[" 每日一题】泵设备技术交流版
Reply #22018-01-17
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Reply #32018-01-17
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Reply #42018-01-17
"参与:获得3财富;回答正确:奖励3财富;注:48小时内回答正确奖励为1贴有效时间4小时。选择题:当离心泵输水时流量和扬程正常但但是电机电流过大时不会是因为()。A.电压太低 B.填料太紧 C C. C.电源频率太高 D.叶轮碰撞泵壳 正确答案:C"
Reply #52018-01-17
"当离心泵输水时流量和扬程正常但电机电流过大时不会是因为C。C B.电压太低 C.填料太紧 C.电源频率太高 D.叶轮碰撞泵壳 正确答案:C"

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