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2019-06-18View Original

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本帖最后由 3983596_FPPZ 于 2019-6-19 07:55 编辑 bk14.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,非答案类回复不予奖励;2、答案部分(答对一道)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、轴承箱上滚动轴承的测振传感器连接孔与轴承箱内腔不连通( ); 2、对于一台既定的自吸泵,当介质比重增大时,其自吸高度基本不变( )。 答案:1、正确 ; 2、错误(之前的答案有问题,更正为:吸上高度是以大气压为基础的做功特性,是大气压能量的一种利用,比重增加,吸上高度降低)。
Reply #22019-06-18
1、轴承箱上滚动轴承的测振传感器连接孔与轴承箱内腔不连通( X ); 2、对于一台既定的自吸泵,当介质比重增大时,其自吸高度基本不变(DUI )
Reply #32019-06-18
1、正确 ; 2、正确。
Reply #42019-06-18
1、正确 ; 2、正确。

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