正确答案: D

A+B

题目:甲板机械是为保证()的机械设备。

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学习资料的答案和解析:

  • [单选题]Temperature control valves installed in the jacket cooling water system of a diesel engine modulates the rate of water flow through the ().
  • heat exchanger


  • [单选题]Which of the following problems may occur if the opening pressure of a fuel injection nozzle is greater than specified by the engine manufacturer?()
  • The start of injection will be retarded


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