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2020-03-11View Original

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129滑动轴承薄壁轴瓦合金层厚度为(    )。  A、1~2mm B、0.32~1mm C、小于0.5mm 2020年3月9日第128题答案B128.高速机械密封除安装技术要求很高外,对机器本身安装技术要求也较高,轴的窜量不应大于(B)mm  A、0.15 B、0.3 C、0.5 2020年3月8日第127题答案B127.密封端面的平均线速度超过(B)m/s时称为高速机械密封。高速泵和离心压缩机的密封即属于高速机械密封。 A、10 B、30 C、50 (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) 最近有点忙,发题和回复评分有点慢,但是再忙再晚我也会发,也会回复大家,感谢大家一直支持!

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