A.Decreasing scavenge air pressure
B.Increasing exhaust temperatures before the turbine
C.Reduction in engine speed
D.All of the above
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A.quality of air filtration
B.effectiveness of lubrication
C.type of fuel used
D.all of the above
A.cetane number
B.octane number
C.ignition index number
D.volatility point
A.antiknock characteristics
B.ignition qualities
C.rates of vaporization
D.viscosity
A.increase in starting air pressure
B.increase in lube oil viscosity
C.compression expansion device
D.jacket water heater
A.corrosion and grooving of exhaust valves
B.corrosion and gumming of the fuel injection pump
C.salt deposits in the exhaust manifold
D.slag deposits in the fuel injection equipment
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Diesel engine air start system check valves are opened by （）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
Cold weather starting of a diesel engine may be made easier by（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
Flame failure in an automatically fired auxiliary boiler can from a/an （）
A purge recovery system is used in a centrifugal air conditioning or refrigeration system to （）
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the（）