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【单选题】

On small, low pressure, air compressors, the cylinders are usually lubricated by the ().

A、splash method

B、mechanical force feed lubricators

C、detached sump method

D、internal cooling passages in the crankshafts and connecting rods

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第1题

A、XFEED设置在LOW1位  B、XFEED设置在LOW2位,并且2A或2B或2C管必须在ON位  C、XFEED设置在LOW2位,并且1A或1B或1C管必须在ON位  

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第2题

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第4题

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第5题

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第6题

A、mean low water  B、mean lower low water  C、mean high water  D、mean high water springs  

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第7题

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第8题

A、leaky discharge valves on the LP cylinder  B、leaky discharge valves on the HP cylinder  C、insufficient intercooler cooling  D、low ambient air pressure  

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第9题

A、High water line  B、Low water line  C、Low water spring line  D、Tide level  

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