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【泵技术版每日一题】2020年2月10日(春节福利:公布答案前答对奖励10财富)

2020-02-11View Original

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100.一般齿轮常用45#钢经过(    )或(    )处理制造。 A、回水、渗碳   B、淬火、退火  C、正火、调质 前天99题答案C99.动平衡试验不仅能校正()不平衡量,不能校正()不平衡量   A、材质、重量   B、转子、叶轮   C、力、力偶 (次日公布前一天答案,公布前答对奖励10财富,公布后答对奖励5财富,参与奖励3财富)

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