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翻译：speed and consumption
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单选题One major disadvantage of a low-speed diesel as compared to a steam main-propulsion system is（）.A
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a minimum speed for the engines that limits the minimum speed of the vesselC
the higher fuel consumption per SHPD
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单选题A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a （）.A
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单选题Which effect does speed through the water have on a vessel which is underway in shallow water （）.A
A decrease in the speed results in a decrease in steering response and maneuverabilityB
An increase in speed results in the stern sucking down lower than the BowC
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A decrease in speed results in the vessel sucking down on an even plane
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单选题When fuel is injected late into a diesel engine cylinder,（）.A
the exhaust will be clearB
fuel consumption will be lowC
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单选题In conventional systems, the injection pressure（）, while it’s（）in common rail diesel engines.A
fluctuates with the engine speed to some extent, independent of the engine speedB
keeps constant at all engine speed, dependent on the engine speed to some extentC
keeps constant at all engine speed, independent of the engine speedD
is decided by the engine speed, constant at all engine speed
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单选题We’d better （）economic speed （）fuel consumption.A
take；saveB
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单选题Propeller pitch speed minus ship speed divided by the propeller pitch speed is termed （）.A
apparent slipB
tree slipC
pitchD
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单选题An anemometer on a moving vessel measures（）.A
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apparent wind speed and true wind direction
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单选题If the speed of a turbocharged diesel engine is maintained constant the turbocharger speed will （）A
decrease until the engine speed increasesB
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decrease as the loadD
increases remain unchanged
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单选题Fuel oil transfer systems used onboard diesel propelled vessels are required to have （）.A
two fuel oil transfer pumps provided where one is to be independent of the main engineB
two fuel oil transfer pumps, with a combined capacity exceeding the maximum consumption of the main engineC
engine driven transfer pumps and only used in constant speed applicationsD
the capacity of the engine driven pump exceed the consumption rate of the engine to which it is attached
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名词解释题Consumption 消费
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