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[". ["일일 문제 泵设备], 선택 문제

2019-05-30View Original

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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、泵连接管线的振动为低频振动,常使用振幅(mm)大小来衡量评价;( ) 2、机械密封在使用初期,出现泄漏量超标的情况是正常允许的,因为要经过一段磨合期,磨合期过后的就正常了。( ) 答案: 1、正确 ; 2、错误;
Reply #22019-05-30
第一题 正确 第二题 错误

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