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单选题
An electrically driven automatically operating auxiliary blower is provided for slow speed and （） of a low speed diesel engine.
A
manoeuvring operations
B
bad combustion
C
cooling
D
mooring trial
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单选题The fuel supply system to an automatic auxiliary boiler, will be automatically shutdown if the boiler （）A
salinity is abnormally highB
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单选题Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.A
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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
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单选题A firebox explosion in an automatically fired auxiliary boiler may be the result of （）A
excessive purging before lighting offB
insufficient trail for ignition periodC
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单选题When there is a flame failure in an automatically fired auxiliary boiler, the （）.A
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fuel supply is shut offC
water supply is shut offD
safety valve lifts
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单选题（） is usually driven by the engine camshaft and supplies pilot air to the cylinder air start valve.A
An air receiverB
An operating valveC
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单选题Excessive vibration of an automatically fired auxiliary boiler can be caused by （）A
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单选题According to Regulations, a power driven auxiliary steering gear for a vessel capable of a 20 knot service speed, must be capable of producing a rudder movement at which of the minimum speeds listed below?（）A
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10 knotsC
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单选题Burner ignition failure in an automatically fired auxiliary boiler would be caused by（）A
a burned out solenoid in the oil supply valveB
high temperature excess airC
incorrectly setting the hot-well dump valveD
an incorrectly positioned burner snubber realy
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单选题Improper maintenance of the fuel oil burners in an automatically fired auxiliary boiler, could result in （）A
increased fuel consumptionB
increased feed water consumptionC
fuel pump failureD
combustion control system failure
考题
单选题Flame failure in an automatically fired auxiliary boiler can from a/an （）A
incorrect electrode settingB
incorrect nozzle positionC
clogged fuel nozzleD
broken high tension lead
考题
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Prior to lighting off a cold automatically fired auxiliary boiler, you should （）.A
check and regulate the water levelB
close the air cock once fires are litC
blowdown the gage glassD
crack the steam stop to assure protective steam flow
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单选题The water in an operating auxiliary boiler should be tested for alkalinity and chloride content each（）.A
hourB
dayC
weekD
month
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单选题If an operating auxiliary boiler has a water pH reading of 7, you should （）.A
bottom blow the boilerB
treat the water with caustic sodaC
treat the water with chemical scavengersD
reduce the water alkalinity to recommended readings
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