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STCW78/95 Convention describes that () are laid down for the certification of engineer officers in charge of a watch in a traditionally manned engine room, or the designated engineer in a periodically unmanned engine room.
A . available minimum requirements
B . available maximum requirements
C . mandatory minimum requirements
D . mandatory maximum requirement
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The exhaust gases for a new engine should be () when the engine operates under full load.
A . smoky
B . a little bit dense
C . visible
D . almost invisible
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The officer in charge of the engineering watch shall notify the chief engineer without delay ().
A . in any emergency or if in any doubt as to what decision or measures to take
B . in the event of any impending action in machinery spaces that may cause reduction in ship’s speed
C . when isolating and bypassing machinery to be worked on
D . co-operating with any engineer in charge of maintenance work
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Engine coolant accumulating in the diesel engine lubricating oil can result from a ()
A . low oil pressure
B . high coolant pressure
C . leaking fuel injector
D . cracked cylinder head or liner
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A two-stroke/cycle diesel engine requires less starting air than a four-stroke/cycle diesel engine, of equal displacement, because the two-stroke/cycle diesel engine()
A . has little or no internal friction
B . has a lower effective compression ratio
C . operates with scavenge air under a positive pressure
D . operates without energy absorbing intake and exhaust stroke
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Before starting a diesel engine that has an engine driven lube oil pump, the engineer should ().
A . open the bypass line
B . cut in the lube oil cooler
C . pressurize the lube oil system
D . top off the expansion tank
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An over-speed trip stops a diesel engine when the engine ()
A . runs out of fuel
B . has low lubricating oil pressure
C . exceeds a set maximum speed
D . has high cooling water temperature
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When attempting to start a main propulsion diesel engine, the engine, the engine turns at the proper speed but will not startYou should check the()
A . starting air pressure
B . scavenge air pressure
C . over-speed trip
D . banjo oiler line
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Lubricating systems for diesel engines are usually designed to initially provide lube oil to the engine ()
A . camshaft beatings
B . main bearings
C . piston crowns
D . cylinder wall
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Since the burning or combustion takes place within the engine itself, the engine is known as ().
A . a fire -tube boiler
B . an internal combustion engine
C . an external combustion engine
D . an internal combustion generator
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Friction, engine wear and oil consumption in a diesel engine are directly related to the ().
A . acidity of the oil
B . pour point of the oil
C . flash point of the oil
D . viscosity of the oil
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Diesel engines are considered safer than gasoline engines because().
A . they are more heavily built
B . the fuel used is less volatile
C . they can be easily reversed
D . they operate at a lower speed
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Immediately after any diesel engine is started, the engineer should check the ()
A . crankcase pressure
B . lube oil pressure
C . saltwater pressure
D . exhaust temperature
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The device used to limit engine torque at various engine speeds is called a ()
A . speed limiting governor
B . variable speed governor
C . constant speed governor
D . load limiting governor
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After the engine is warned, we should() the turning gear before starting up the engine.
A . take in
B . put in
C . take out
D . put u
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If a crankcase explosion occurs in a diesel engine, you should stop the engine and()
A . immediately open all crankcase relief ports
B . increase crankcase exhauster speed to draw cool air into the engine
C . allow the engine to cool naturally
D . increase crank case scavenge air to remove unburned gase
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Critical speed in diesel engines occurs when engine torque pulsations become ()
A . opposed to the crankshaft rocking couple
B . resonant with the crankshaft natural frequency
C . critical fore and aft crankshaft vibrations
D . horizontal whipping motions of the crankshaft
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Before starting an engine by air, the engine must()
A . be turned by a turning gear for at least one minute
B . be turned by a turning gear for at least two minutes
C . be turned at least one complete turn
D . be turned at least two complete tur
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With UMS, when the engine room is unwatched () will control the main engine.
A . the bridge officer on watch
B . the chief engineer
C . the duty engineer
D . the duty motorma
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A restricted air intake to a diesel engine may result in the engine ().
A . failing to reach rated speed
B . knocking under maximum load
C . hunting or surging under light load
D . overspeeding and running away
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A diesel engine is similar to a gasoline engine except that the former has no ().
A . cross-head
B . cylinder
C . connecting rod
D . spark plug
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Diesel engine mufflers or silencers reduce the engine exhaust noise by ()
A . passing the exhaust through long head pipes
B . diffusing exhaust vibrations through activated carbon baffles
C . increasing the exhaust gas velocity
D . reducing the exhaust gas velocity
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Several years after his retirement, the engineer's company ______.
A.bought a very advanced machine
B.had a very expensive machine out of order
C.placed an order for a very expensive machine
D.had difficulty destroying a very expensive machine
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Software engineering economy is an effective part of software engineering,which ofthe following contents is the research content of software engineering economy( ).
①estimation of software development cost
③earn & cost analysis of software development
③adjustment of software development progress
A.①only B.②and③ C.①and② D.all
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Software Engineering Economy is an effective part of software engineering, which of the following content is the research comtent of software engineering economy?
Ⅰ.Estimation of software development cost
Ⅱ.Earn & Cost analysis of software development
Ⅲ.Adjustment of software development progress
A.Ⅲ only
B.Ⅱ and Ⅲ
C.Ⅰ and Ⅱ
D.all