海船船员考试

单选题The system will include various （） such as low tank level alarms and remote operation of tank outlet valves in the events of a fire.A SwitchesB panelsC alarm unitsD safety devices

题目
单选题
The system will include various （） such as low tank level alarms and remote operation of tank outlet valves in the events of a fire.
A

Switches

B

panels

C

alarm units

D

safety devices

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相似问题和答案

第1题：

In the following statements about the principle of the low level controlling, which is WRONG? 0

A.Low level is monitored on the drain tank and header tank.

B.If there is high differential the filters pressure across the circulating

pumps is alarmed

C.The lubricating oil purifier cannot take oil from the drain tank

D.If the sea water pressure falls, this also operates an alarm


答案：C

第2题：

In a diesel engine closed freshwater cooling system, the amount of coolant flowing through the heat exchanger is controlled by the __.

A.suction pressure regulator

B.thermostatic bypass valve

C.sea water temperature

D.water level in the expansion tank


正确答案：B

第3题：

ENUM类型的字段level定义为(LOW、MIDDLE、HIGH),ORDERBYlevelasc的顺序是()

A、HIGH、LOW、MIDDLE

B、LOW、MIDDLE、HIGH

C、MIDDLE、LOW、HIGH

D、HIGH、MIDDLE、LOW


正确答案:B

第4题：

An AIX system administrator wants to reset the level at which the SIGDANGER signal is sent to processes so appropriate actions can be taken when paging space is running low.  Which of the following commands is used to reset the level？（）

  • A、 vmtune -w
  • B、 svmon -w
  • C、 schedtune -w
  • D、 vmstat -s

正确答案:A

第5题：

What alarm is NOT found on an inert gas system ________．

A.Low oxygen alarm

B.Low pressure alarm

C.Scrubber high water level alarm

D.Deck seal low water alarm


正确答案：A

第6题：

( )is monitored on the drain tank and header tank by magnetic switches with a 20seconds delay to prevent false alarms due to surging

A.Low pressure of the lubricating oil

B.Low level of the lubricating oil

C.High temperature of the lubricating oil

D.High temperature of the cooling water


答案：A

第7题：

If both the ‘high level’and ‘low level’ alarms come on for the same address of a centralized（集中的） control console, the most likely problem is a/an ______.

A.sensor failure

B.failed alarm

C.low level

D.extremely high level


正确答案：A

第8题：

The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler()

A.salinity is abnormally

B.high steam demand is too

C.feed-water flow is low

D.water level is abnormally low


答案：D

第9题：

You are planning to use a crude oil washing system．What precaution must be taken with the tank as the source for the washing machines ________．

A.It must be debottomed and the level lowered by at least one meter

B.The oil in the source tank must be sampled for compatibility

C.The source tank must have been crude oil washed at least once in the past 150 days

D.The inert gas system must lower the oxygen content to a maximum of 12% oxygen in the tank


正确答案：A

第10题：

Rate your level of proficiency with monitoring and optimizing system performance and reliability of Windows XP Professional for desktop and mobile users.（）

  • A、Very High
  • B、High
  • C、Moderate
  • D、Low
  • E、Very Low

正确答案:A

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