正确答案: B

of trunk piston type

题目:Marine four-stroke diesel engines are mainly ().

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学习资料的答案和解析:

  • [单选题]At least () cylinders in four-stroke engine will be configured to ensure that the engine can be started with the crankshaft at whatever position.
  • 6


  • [单选题]Passages are drilled in the crankshafts of diesel engines to provide lubricating oil to the ().
  • All of the above


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