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【每日一题 泵设备】判断题2019.9.9

2019-09-09View Original

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bg2.png判断题规则:1、两道题回答全错给予积极参与+2财富,回答一错一对给予+4财富,两道题回答全对给予+6财富。2、如只回复一个答案,除非明确了是哪道题的答案,正确+4财富,错误+2财富,否则一律按积极参与+2财富执行。3、回答奖励每人限一次。4、每个回复限评分一人次。5、回复后可见答案及答案解释。6、奖励在48小时内有效,逾期不予奖励。 学*又拿奖,天天来逛逛 1、用VOC测漏仪器,判定普通机泵的泄漏标准,泄漏值超过500ppm,即从环保角度,视为该泵密封泄漏,需要修理或更换密封。( ) 2、振动分析时,一倍频占主要振动成分的,最常见的问题特征往往是不对中。( ) 答案:正确,错误(一倍频占主要成分的,往往更多的是不平衡)
Reply #22019-09-09
鉴于版块人气持续低迷,考虑恢复每日一题版块。:lol

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