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[ [{"每日一题 泵设备": "选择 pérdida平衡盘": "平衡盘": pérdida叶平衡盘": "平衡盘": "平衡盘"] kukul平衡盘": "平衡盘"]

2019-04-28View Original

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本帖最后由 3983596_FPPZ 于 2019-4-28 10:27 编辑 bk12.jpg答题及管理规则:1、每题答案全部错误,积极参与奖励2财富;2、答案部分正确奖励5财富;答案全部正确奖励8财富;3、回答奖励每人限一次;4、每个回复限管理评分一次;5、回复后可见答案及解释;6、回复奖励在48小时内有效。 学*又拿奖,天天来逛逛 1、(单选)下列能够独立实现平衡离心泵轴向力功能的结构是( ) A 叶轮的平衡孔 B双吸叶轮 C多级泵的平衡盘 D双流道泵体 2、(判断)一液体80℃时的气化压力为150KPa(A),则在该温度下,当压力表的示数为0.1MPa时,液体会发生汽化。( ) 距离五一假期 还有 3 天 答案:1、B (平衡孔要与后口环配套使用;平衡盘至少与平衡管配套使用,常常与平衡鼓搭配使用;双流道泵体是平衡径向力的一种结构); 2、错 (150KPa(A)=0.15MPa(A)绝对压力,0.15MPA(A)-0.1(A)大气压力=0.05MPa(G)表压,小于表压0.1MPa(G),所以不会汽化。
Reply #22019-04-28
第一题:B 第二题:错
Reply #32019-04-28
1,C多级泵的平衡盘  2,
Reply #42019-04-28
1B,2错误。答案能直接看到啊

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