轮机英语【二三管】题库

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Reheating hardened component to a temperature lower than the hardening temperature and then cooling ...

Reheating hardened component to a temperature lower than the hardening temperature and then cooling it is known as _____
  • A.low temperature hardening
  • B.case hardening .
  • C.annealing
  • D.tempering回火
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1 单选题 1分
The unit of electrical resistance is the____.
  • A.ampere
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2 单选题 1分
Synchroscope and synchro indicating lights are located on ____of main switchboard
  • A.load panel
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3 单选题 1分
From _____the preheated fuel is led to the settling tank
  • A.the heavy fuel oil double bottom tank
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5 单选题 1分
When the interface between oil and water reaches ____ the oil outlet valve____，and the water outlet valve _____.Then the oil is discharged automatically.
  • A.upper electrode/closes/opens
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