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When two oil separators are working in series, they should work with ____.

  • A.both as clarifiers
  • B.first one as clarifiers, second one as purifier
  • C.both as purifiers
  • D.first one as purifier, second one as clarifier
试题出自试卷《海船船员考试轮机部三管轮模拟题3(轮机英语)》
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  1. When two oil separators are working in series, they should work with ____.

    • A.both as clarifiers
    • B.first one as clarifiers, second one as purifier
    • C.both as purifiers
    • D.first one as purifier, second one as clarifier
  2. What is the harmful effect of sulfur in a fuel?

    • A.It causes excessive smoking and soot at low firing rates
    • B.It doesn’t readily burn when combined with oxygen
    • C.It clogs fuel oil strainers more often
    • D.It forms a corrosive acid when mixed with water or water vapor
  3. Shaker, circulation and spray are the three general methods used in __________

    • A.pre-injection fuel oil treatment
    • B.lube oil filtration
    • C.lube oil purification
    • D.piston cooling
  4. ______ is used to prevent the entry of sea water to the machinery space.

    • A.A special sealing gland
    • B.Propeller
    • C.Tailshaft
    • D.Sterntube bearing
  5. The crankshaft is of the semi built type, with the journal _____ the forged or cast steel crank throws.

    • A.shrunk into
    • B.expanded into
    • C.extended into
    • D.designated into
  6. Diesel engine control can be obtained by the bridge _____.

    • A.at any time
    • B.only after the engine room control station is switched to “bridge control”
    • C.whenever the secondary station is switched to "bridge control"
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  7. The part of the anchor windlass that engages the anchor chain for lifting is called the _____.

    • A.warping head
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    • A.excessive drive motor speed
    • B.excessive pump discharge pressure
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  9. Propulsion of the vast majority of contemporary merchant ships (especially containerships and VLCCs) utilizes____ as prime mover.

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  10. If the capacity of the refrigeration compressor is too small, the excess vapor will accumulate in the evaporator, causing the pressure to _____.

    • A.rise
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