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单选题
Main engines as well as auxiliary engines operating on heavy fuel should have continuous on the lubricating oil, either according to the bypass or batch principles（）
A
filtering
B
centrifuging
C
depositing
D
operating
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low lube oil pressureC
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单选题Who is in charge of the auxiliary engines?（）A
The chief engineerB
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单选题Because the castings of smaller engines are not so big and heavy, （） and cylinder block may be made in one piece.A
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the jacketC
cylinder coverD
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engine room control stationC
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four-stokeC
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单选题The main function of tie rods in the construction of large, low speed diesel engines is to（）.A
stiffen the bedplate in way of the main bearings to increase the engines longitudinal strengthB
accept most of the tensile loading that results from the firing forces developed during operationC
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考题
单选题（）, so they are widely used on board ship nowadays.A
Diesel engines have more advantages in comparison with gasoline enginesB
Diesel engines have more advantages in comparison to gasoline enginesC
Gasoline engines have more advantages in comparison with diesel enginesD
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Both engines slow aheadB
Engine slow ahead portC
Engine slow ahead starboardD
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单选题Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.A
increasing the volume of intake airB
shutting off the fuel supplyC
increasing the engine back pressureD
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单选题Exhaust pipes for separate diesel engines can be combined only when （）A
space limitations prevent separately run pipesB
the engines are small auxiliary unitsC
they are arranged to prevent gas backflow to each engineD
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单选题The booster pump, which supplies diesel oil to（） , should have a possibility of being powered by compressed air or by emergency power.A
the main enginesB
the auxiliary enginesC
the emergency generator engineD
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at high speed and full loadB
at low speed and part loadC
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an auxiliary reservoirB
a controlling air bottleC
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ElectricB
HydraulicC
AirD
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单选题About the jacket water, that of the auxiliary engines usually（） is circulated by pumps, and the main engine usually （）A
an engine-driven；as wellB
an engine-driven；has an independent pumpC
an independent；as wellD
an independent；has an engine-driven pump
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单选题The main operating characteristic of diesel engines which distinguishes them from other internal combustion engines is the （）A
method of supplying airB
cooling systemC
method of igniting fuelD
valve operating mechanism
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单选题In some modern large diesel engines, which of the following is used as the support for the main bearings?（）A
BedplateB
BlockC
BaseD
Sump
考题
单选题An auxiliary reservoir for starting auxiliary engines should be kept at （）.A
low pressure at all timesB
full pressure at all timesC
low pressure at intermittenceD
full pressure at intermittence
考题
单选题A light signal consisting of three flashes means （）.A
I am in doubt as to your actionsB
My engines are full speed asternC
I desire to overtake youD
I am operating astern propulsion
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