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The effect that exhaust gas recirculation can reduce NOX formation is partly due to a

reduction of the()concentration in the combustion zone and partly due to the content of water and carbon dioxide in the exhaust gas.

A.Oxygen

B.Nitrogen

C.Sulphur

D.Freon

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第1题

What had been done to comply with the IBC.Code in terms of the carriage of liquid chemicals?()

A.Building chemical tankers.

B.Building sealed tankers

C.Building pipelines

D.Building tankers

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第2题

Which of the following will be the advantage of a centrifugal pump as compared with a

reciprocating pump? l.Its discharge is continuous; ll.It has no internal valves: lll.Upon accidental closing of discharge valve, excessive pressure will not build up()

A.l, ll

B.ll, lll

C.l ,ll.III

D.llonly

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第3题

Most marine biological sewage treatment plants consist of all the following statements except()

A.aeration tanks

B.settling tanks

C.disinfection agent(消毒剂

D.anaerobic bacteria(厌氧菌)

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第4题

The lowest temperature at which the vapor formed from a liquid ignites and continues to burn steadily in the presence of an ignition source is called the( ).

A.flash point

B.fire point

C.upper explosive limit

D.lower explosive hmlt

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第5题

According to STCW Code,which of the following functions must an engineer officer possess?( )

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第6题

What is NOT true about overhaul repair?( )

A.Overhaul repair is a major repair.

B.Overhaul repair is carried out in a dock.

C.Overhaul repair is carried out once a year.

D.Overhaul repair is done for the purpose of rating.

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第7题

Most minor spills of oil products are caused by( ).

A.equipment failure

B.human error

C.majon casualties

D.unforeseeable circumstances

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第8题

Enhanced procedures concerningthe exercise of( )have been developed to allow intervention in the case of deficiencies deemed to pose a danger to persons,property or the environment.

A.port state control

B.flag state control

C.fire and boat drill

D.safety inspection

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第9题

If the emergency fire pump is not able to perform. at or between any draft(s)this should be()

A.kept as a secret

B.avoided any operation

C.adjusted ballasting

D.noted on board and take naction to arrange alternatives

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第10题

Resources are allocated and assigned as needed in( )to perform. necessary tasks.

A.suitable sequence

B.correct sequence

C.correct priority

D.suitablepriority

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