轮机英语【二三管】题库

单选题 1分

Which of the following substance?are not covered by MARPOL convention?

  • A. Noxious liquid substance in bulk
  • B. Harmful substance in package
  • C. Sewage and garbage
  • D. All dangerous goods
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1 单选题 1分
An operational amplifier, as used in today’s consoles, has a calculated gain of 5. This means that when the input changes ______
  • A.5 volts, the output changes 10 volts
  • B.10 volts, the output changes 5 volts
  • C.2 volts, the output changes 10 volts
  • D.10 volts, the output changes 2 volts
3 单选题 1分
4 单选题 1分
After received the “finished with engine “order from bridge , which of the following operation is false ?
  • A..shut off the main starting valve
  • B. Stop the fuel oil booster pump and shut off the correspondence valves
  • C. Stop the sew water pump immediately and shut off the correspondence valves
  • D. Stop the jacket water pump immediately and shut off the correspondence valves
5 单选题 1分
Power is supplied through ___to larger auxiliaries at the __voltage
  • A.circuit breakers , low
  • B.circuit breakers, high
  • C.Exciters , low
  • D.Exciters ,high
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