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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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A possible cause for an individual piston to knock when at TDC on a slow-speed, two-stroke/cycle main propulsion diesel engine could be due to （）
A . early fuel injection
B . excessive bearing play within the running gear
C . overloading of the cylinder
D . all of the above
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Trunk type diesel engine pistons are effectively cooled when heat is（）
A . radiated through the engine block
B . transferred to water cooled cylinder walls
C . conducted through the piston crown
D . transferred to escaping exhaust gase
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A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）
A . ignition lag
B . engine horsepower
C . lube oil system pressure
D . specific fuel consumptio
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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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When fuel is injected late into a diesel engine cylinder,（）.
A . the exhaust will be clear
B . fuel consumption will be low
C . all the fuel will be burned at top dead center
D . fuel consumption will be high
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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 using a fuel with a higher than normal sulfur content in an auxiliary diesel engine, you should（）
A . maintain higher than normal jacket water temperature
B . change the lube oil more frequently than normal
C . maintain a higher air-box temperature than normal
D . maintain a higher air-box pressure than normal
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If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.
A . at each control station
B . in the chief engineer’s quarters
C . in the captains quarters
D . All of the above are correct
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When fuel enters the crankcase of a diesel engine, it （）
A . dilutes the lube oil and reduces its viscosity
B . forms sulfuric acid in the lube oil
C . causes pitting and failure of the bearings
D . causes sludge deposits on valve stem
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“Stand by an engine” means （）
A . “prepare to stop the engine”
B . “assemble an engine on its bedplate”
C . “make an engine ready for starting”
D . “dismantle an engine&rdquo
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When starting an engine, the compressed air enters the cylinder when the corresponding piston is in position of its（）
A . suction stroke
B . compression stroke
C . power stroke
D . exhaust stroke
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Which of the following features is an IBM advantage when comparing the Oracle/Storage TekVirtual Storage Manager (VSM) to the IBM Virtualization Engine TS7700 (VTS)?（）
A . throughput
B . automatic tape reclamation
C . 3490E tape volume emulation
D . disk and tape (physical) storage included in same frame
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When an air started, four-stroke/cycle diesel engine is being cranked, the starting air is admitted to each cylinder during what would normally be the（）
A . intake stroke
B . compression stroke
C . power stroke
D . exhaust stroke
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（） the supercharge pressure is, （） power an engine develops.
A . The higher；the more
B . Higher；more
C . Higher；little
D . The higher；the le
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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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When accepting engine room spares, you should（）
A . send a requisition list to the supplier
B . check that whether the items ordered have been already delivered
C . make the chief engineer on sport
D . follow a preset procedure
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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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After an engine is started you should（）.
A . increase engine speed to insure adequate flow of oil to all parts of the engine
B . pay no attention unless there are unusual noises from the engine
C . check operating pressures and temperatures，and check for leaks
D . run the engine at idle until the temperature has increased
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When possible，what is the FIRST step in fighting an engine fuel-pump fire which results from a broken fuel line?（）
A . Secure all engine room doors，hatches，and vents
B . Close the fuel line valve
C . Check the spread of the fire with foam
D . Cast the barge off the wharf
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An interlock in the remote operating valve line stops the valve （） when the engine turning gear is engaged.
A . to open
B . opening
C . open
D . opened
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When the engine room is put in standby condition, the engineer in charge of the watch need not to（）
A . ensure all machinery which may be used during maneuvering is in ready
B . ensure an adequate reserve of power is available for steering gear and other requirements
C . keep the main propulsion unit controls continuously attended when in the manual mode of operation
D . ensure all machinery which may be used during maneuvering is running stably
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Engineering students are supposed to be examples of practicality and rationality, but when it comes to my college education I am an idealist and a fool. In high school I wanted to be an electrical engineer and, of Course, any sensible student with my aims would have chosen a college with a large engineering department, famous reputation and lots of good labs and research equipment. But that's not what I did.
I chose to study engineering at a small liberal-arts university that doesn't even offer a major in electrical engineering. Obviously, this was not a practical choice; I came here for more noble reasons. I wanted a broad education that would provide me with flexibility and a value system to guide me in my career. I wanted to open my eyes and expand my vision by interacting with people who weren't studying science or engineering. My parents, teachers and other adults praised me for such a sensible choice. They told me I was wise and mature beyond my 18 years, and I believed them.
I headed off to college, feeling sure I was going to have an advantage over those students who went to big engineering "factories" where they didn't care if you had values or were flexible. I was going to be a complete engineer: technical genius and sensitive humanist all in one.
Now I'm not so sure. Somewhere along the way my noble ideals crashed into reality, as all noble ideals eventually do. After three years of struggling to balance math, physics and engineering courses with liberal arts courses, I have learned there are reasons why few engineering students try to reconcile engineering with liberal-arts courses in college.
The reality that has blocked my path to become the typical successful student is that engineering and the liberal arts simply don't mix as easily as I assumed in high school. Individually they shape a person in very different ways; together they threaten to confuse. The struggle to reconcile the two fields of study is difficult.
The author chose to study engineering at a small liberal-arts university because he ______.
A．intended to be a sensible student with noble ideals
B．wanted to be an example of practicality and rationality
C．intended to be a combination of engineer and humanist
D．wanted to coordinate engineering with liberal-arts courses in college
此题为多项选择题。
