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单选题
In describing basic diesel engine operation,the term ‘event’ refers to ()
A
the production of high pressure gases
B
the removal of expended combustion gases
C
the admission of air to the cylinder
D
all of the above
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the proper back pressureB
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the production of high pressure gasesB
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单选题For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because ().A
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单选题When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?()A
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考题
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noise coming from that air starting valveB
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单选题Before engaging the turning gear and turning the diesel engine, which of the following operation should be done except()A
open the indicator cocksB
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单选题When ship navigating in rough sea, the correct operation is ()A
navigating with a low diesel engine speedB
navigating with a stable diesel engine speedC
increasing the efficiency of propellerD
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单选题The jacket water temperature in a diesel engine closed freshwater cooling system is normally controlled by ()A
regulating the level of corrosion inhibitor in the primary cooling systemB
the level of the freshwater expansion tankC
varying the engine load to meet temperature requirementsD
the operation of the thermostatic valve
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