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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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The lower end of each piston rod is reduced in diameter to fit a bore in (), this being secured to the piston rod by a nut.
A . the crank-web
B . the connecting rod
C . the main bearing
D . the cross-head
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The lower end of each piston rod is reduced in diameter to fit a bore in the (), this being secured to the piston rod by a nut.
A . piston gudgeon pin
B . piston skirt
C . cross-head
D . cross-head pi
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If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase()
A . inspection covers should not be opened until the engine has cooled
B . ventilation system should be continued in operation for one hour for cooling
C . scavenge pump should be immediately secured to prevent loss of lube oil
D . explosion covers should be opened slightly to provide extra ventilatio
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Voice quality is bad due to high delay and jitter on a link. Which two actions will improve the quality of voice calls?()
A . Increase the queue size of the voice class.
B . Guarantee bandwidth during congestion to the voice class with a bandwidth command.
C . Increase the tx-ring of the egress interface.
D . Implement LLQ for the voice class.
E . Decrease the rx-ring of the egress interface.
F . Decrease the queue size of the voice class.
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The main purpose of the piston oil scraper rings is to ().
A . seal the space between the piston and the liner
B . reduce the amount of lube oil burned in the combustion chamber
C . transmit heat from the piston to the cylinder liner
D . damp out fluctuations of the piston side thrust
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An aluminum piston has lower inertia and higher coefficient of () compared to that of cast iron.
A . viscosity
B . twisting moments
C . inertia
D . thermal expansio
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The primary purpose of oil control rings on a diesel piston is to()
A . provide a reservoir for cylinder lubrication
B . pump oil into the combustion space for cylinder cooling
C . prevent excessive lubricating oil consumption
D . allow hydraulic oil film formation on the cylinder
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Which of the following shows the proper pronunciation of “boiled” due to assimilation?
A . /bɔild/
B . /bɔilt/
C . /bɔilid/
D . /bɔilit/
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According to SINOTIME Charter In the event of loss of time due to(),hire will not cease.
A . detention of or interference with the Vessel by any authorities in consequence of legal action against,or breach of regulations by the Owners,Master,Officers or Crew
B . stoppages resulting from any breach of this Charter by the Owners
C . deviation,putting back or putting into any port other than that to which she is bound under the instructions of Charterers for any reason or for any purpose
D . reasonable deviatio
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Charted depths()by 2 meters due to state of the winds.
A、Is decreased
B、decreased
C、decreases
D、are decreased
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An advantage of aluminum pistons, when compared to cast iron pistons is ().
A . greater high temperature strength
B . better heat conductivity
C . greater weight per cubic inch
D . increased resistance to wear
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Fifty bags melted due to()of the cargo.
A . mixed marks
B . nature
C . rottenness
D . number
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If the compression rings on a diesel engine piston become stuck in the ring groove, the cause may be due to()
A . excessive ring action
B . excessive ring temperature
C . improper ring rotation
D . excessive ring face wear
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The main function of piston compression rings is to ()
A . prevent excessive cylinder liner wear
B . reduce friction losses in the engine
C . seal the space between the piston and the liner
D . limit upward flow of lube oil into the combustion space
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The lower end of each piston rod is reduced in diameter to fit a bore in the cross-head, this being secured to the piston rod by ().
A . a bolt
B . a cap
C . a disc
D . a nut
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A Windows Azure application connects to a SQL Azure database. Connections to the database are being dropped due to throttling. You need to recommend an approach for identifying the root cause of the problem. Which two actions should you recommend?()
A . Use Dynamic Management Views to analyze performance issues.
B . Decrease the connection timeout in the database connection string.
C . Make sure the application is closing database connections that are not needed.
D . Use SQL Profiler to analyze performance issues by configuring it to connect to SQL Azure.
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A vessel may be unable to take proper and effective action due to the speed()too high or,in some circumstances,too low.
A . is
B . is to be
C . will be
D . being
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The boom of American agriculture is mainly due to the generosity of nature.
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Any action to avoid collision shall, if the circumstances of the case admit, ______, made in ample time and with due regard to the observance of good seamanship.
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Due to its unique , Suzhou gets its fame of “Venice of the East”.
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An L/C applicant is unhappy with the goods he receives. He is due to pay a term bill of exchange. Which of the following course of action could take place?______.
A.He is obliged to pay as the documents were in order.
B.He can instruct the issuing bank not to debit him.
C.He can pay a reduced amount to compensate for the inferior goods.
D.He instructs the issuing bank to return the documents with a payment refusal statement to the beneficiary.
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The process of rescuing trapped miners is slow due to
A.the difficulties of getting down into the coal mine.
B.the great casualties of the mining accident.
C.the risk of catching infectious disease.
D.the continuous blasts inside the coal mine.
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Which of the following shows the proper pronunciation of 'boiled' due to assimilation?
A./boild/
B./boilt/
C./boilid/
D./boiliff