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瓶组供应系统supply system of cylinder group
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One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?A.Low loading of the cylinderB.Excessive cooling of that pistonC.Sluggish ring action on the pistonD.A mechanical defect in a working part
考题
单选题When operating the air supply system in a covered lifeboat the（）.A
fuel supply valve should be closedB
hatches，doors，and oar ports should be closedC
air cylinder shut-off valve should be closedD
engine should be shut off
考题
单选题（） are fitted in the exhaust system and facilitate charge removal and scavenging in each cylinder.A
DiffusersB
CompressorsC
Steam boilersD
Soot blowers
考题
单选题Charging is the filling of the engine cylinder with a supply of （） for compression.A
waterB
fresh airC
fuel oilD
gas
考题
单选题Charging is the filling of the engine cylinder with a supply or charge of fresh air （） compression.A
to needB
ready forC
want toD
going to be
考题
单选题The mechanical exhaust valve operation system is replaced by（）in an electronic controlled ME engine.A
a system with a Hydraulic Power Supply (HPS) unitB
a system with roller guides for exhaust valvesC
a system with an electronically controlled Alpha LubricatorD
a system directly powered by electric motor
考题
单选题Persistent knocking of one cylinder of a diesel engine ceases when the fuel supply to that cylinder is securedThis problem may be a result of （）A
low loading of that cylinderB
faulty combustion in that cylinderC
sluggish piston ring actionD
excessive piston cooling
考题
单选题The cross-head shoes are white metal lined, grooves being cut horizontally on the face of the white metal to ensure （）.A
an adequate supply of lube oilB
an adequate supply of fuel oilC
an adequate supply of turbine oilD
an adequate supply of cylinder oil
考题
单选题If the engine of a survival craft does not start，check to see（）.A
that the fuel valve is openB
if the air supply system is openC
if the water sprinkler system is openD
if the limit switch is on
考题
单选题If an air compressor is used to supply air primarily to the combustion control system and other pneumatic controllers, the entire system is known as the （）.A
control air systemB
forced draft air systemC
supply air systemD
ships service air system
考题
单选题（）is main emergency fire system in all merchant ships.A
CO2 systemB
Foam systemC
Dry power systemD
Water supply system
考题
单选题LPG供应站不包括（）A
瓶组气化站B
瓶装供应站C
瓶组气化站和瓶装供应站
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