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单选题
Before being shut down, a diesel engine should idle a few minutes in orderto ()
A
prevent governor surging at shutdown
B
make sure the fuel nozzles are flushed clean
C
prevent pressure buildup in the fuel lines
D
prevent damage from localized overheating
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open the indicator cocksB
supply some LO to cylinder liner wall with lubricatorC
put the fuel handle in the stop positionD
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单选题While maneuvering, you discover heavy smoke coming from the turbocharger casing, you should ()A
check the air filter for dirtB
check for an exhaust leakC
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单选题If a single cylinder relief valve on a main propulsion diesel engine begins to lift, but it is not possible to secure the engine, which of the following actions should be taken?()A
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over-speeding of the engineB
failure of the engine to shut downC
no effect of engine mounting boltsD
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单选题Before starting a diesel engine that has an engine driven lube oil pump, the engineer should ().A
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单选题Regarding a Diesel engine crankcase, the general arrangement and installation should preclude the possibility of ()A
free entry of air to the crankcaseB
water entering the crankcase while engine wash-downs are being performedC
excessive oil leakage during periods of increased blow-byD
sub-cooling internal components
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单选题A diesel engine fails to start because of water in the fuelIn order to start the engine, you should ()?A
turn engine with jacking gearB
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the main enginesB
the auxiliary enginesC
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low lube oil temperatureB
high ambient air temperatureC
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Reduce engine speed to idle before removing the filterB
Soak the dirty filter in kerosene onlyC
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考题
单选题Diesel engine automated control systems may utilize sensing devices of dual function, with sensing ranges providing both alarm and engine shut down capability.Which of the key points would only require an alarm sensor?()A
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单选题Which statement about diesel engine combustion is true?()A
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单选题Before being shut down, a diesel engine should idle a few minutes in orderto ()A
prevent governor surging at shutdownB
make sure the fuel nozzles are flushed cleanC
prevent pressure buildup in the fuel linesD
prevent damage from localized overheating
考题
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
supply some CYL Oil to cylinder liner wall with lubricator (only for two stoke diesel engine)C
put the fuel handle in the “stop” positionD
pump up the air bottle
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单选题If a crankcase explosion occurs in a diesel engine, which of the listed actions should be taken?()A
Open the crankcase immediately to check for damageB
Apply fire fighting water through the crankcase breatherC
Allow the engine to cool before opening the crankcaseD
Assume that there is no damage to the crankshaft
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单选题When running a large, low-speed, main propulsion diesel engine on heavy fuel, which of the following precautions should be observed when switching back over to diesel oil?()A
The diesel oil must never be allowed to mix with the heavy fuelB
The temperature of the fuel from the pre–heater should be gradually reduced after switching over the three–way valveC
The heating steam to the pre-heater should be secured as soon as the diesel fuel passes through the three-way valveD
The heating steam must be secured before the diesel oil passes through the three-way valve
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