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Increasing differential pressure of an oil filter indicates

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  • [单选题]Increasing differential pressure of an oil filter indicates that ()

  • A. it is dirty
    B. it is leaky
    C. it has been renewed
    D. all the above

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  • 学习资料:
  • [单选题]废气锅炉烟道温度在1100℃以上时可能发生()。
  • A. 小的烟垢着火
    B. 锅炉爆炸
    C. 铸铁着火
    D. 氢着火

  • [单选题]In a general oil cooler circulated by sea water, the oil is at a higher pressure, the result being that any leak in the cooler will mean a loss of ().
  • A. oil
    B. sea water
    C. air
    D. fresh water

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