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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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单选题Who is in charge of the auxiliary engines?（）A
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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
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Engine slow ahead portC
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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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space limitations prevent separately run pipesB
the engines are small auxiliary unitsC
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the auxiliary enginesC
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at low speed and part loadC
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a controlling air bottleC
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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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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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