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单选题
Supply the （）before starting an air compressor.
A
fuel oil
B
cooling water
C
steam
D
power
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one automatic drain serving both containersB
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单选题Before hydraulic starting of an engine on a covered lifeboat，what need NOT be checked?（）A
Fuel supply line valveB
Pressure registered on the accumulator gaugeC
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考题
单选题The opening or closing of the cylinder starting valve is controlled by （）.A
the starting air distributorB
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单选题The main purpose of starting the diesel engine on air briefly is（）A
to inspect if the cylinder has the water leakageB
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单选题Which of the following may cause that an engine doesnt turn on starting air?（）A
too low starting air pressureB
main starting valve closedC
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单选题（） device is provided to prevent starting air from being admitted to the cylinder before the reversing is completed.A
An automaticB
A transmissionC
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An interlocking
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单选题What is the best way of stopping an over-speeding diesel engine?（）A
Disconnect the battery cables from the starting motorB
Drain the hydraulic fluid from the governor sumpC
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考题
单选题Before starting the engine the air bottle should be （）.A
pumped upB
loadedC
dischargedD
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单选题Which of the following may lead to the engine NOT to start on air?（）A
starting air pressure too highB
correct timing of starting air valvesC
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单选题Which of the following methods is used to prevent throttling of compressed air through the diesel engine air starting valves?（）A
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Reducing the starting air valve size
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单选题Open the （）of inter cooler before starting an air compressor.A
cylinder coverB
cooling waterC
oil cupD
drain valve
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单选题Before starting an engine by air, the engine must（）A
be turned by a turning gear for at least one minuteB
be turned by a turning gear for at least two minutesC
be turned at least one complete turnD
be turned at least two complete turns
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单选题If you are unable to stop a diesel engine by any other means，you should（）.A
discharge a CO2 extinguisher in the air inletB
pull off the distributor capC
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secure the starting air supply valve
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单选题Gas exchange, which is a basic part of the cycle of an internal combustion engine, is（）A
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the supply of fresh air and removal of exhaust gasesD
the supply of fresh air and removal of the extra heat
考题
单选题Before starting an air compressor, It should be （）.A
turnedB
oil level checkedC
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单选题Before starting an air compressor, It should be （）.A
unloadedB
primedC
filled with waterD
greased
考题
单选题Pump up the starting air reservoirs to their maximum pressure and （）the air reservoirs and air system.A
openB
closeC
drainD
vent
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单选题When starting air is admitted, a diesel engine turns over very slowly without firingThe cause may be （）A
an obstruction in an cylinderB
water accumulation in some engine cylindersC
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单选题In an operating diesel engine, which of the following condition is an indication of a leaking air starting valve?（）A
noise coming from that air starting valveB
continuous operation of the starting air compressorC
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考题
单选题When an engine is starting and has got a sufficiently high speed, say about 20 rpm,（）A
the starting air supply is cut off and fuel is injected into the cylindersB
the fuel feeding is cut off and the turning gear is put inC
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单选题The starting air bottle should be pumped up to maximum pressure by the （） before start of the engine.A
air compressorB
refrigeration compressorC
vacuum pumpD
purifier
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