increase in engine speed
increase in cylinder turbulence
leaking needle valve
reduction in cylinder turbulence
第1题：
When fuel is injected late into a diesel engine cylinder_______.
A.the exhaust will be clear
B.fuel consumption will be low
C.all the fuel will be burned at top dead center
D.fuel consumption will be high
第2题：
What quality of a diesel fuel is most significant for efficient combustion ________．
A.Volatility
B.Viscosity
C.Flash point
D.Specific heat
第3题：
When the ships is going to enter into the harbor
A.change from heavy fuel oil to diesel oil for main engine
B.pumping out bilge water
C.change sea chest form high level one to lower level one
D.test emergency generator
第4题：
Viscosity
acid content
heating value
ignition quality
第5题：
low exhaust back pressure
high lube oil temperature
insufficient cranking speed
excessive fuel atomization
第6题：
The cetane number of a diesel fuel oil indicates its ______.
A.viscosity
B.acid content
C.heating value
D.ignition quality
第7题：
cetane number
octane number
ignition index number
volatility point
第8题：
_______can be a direct cause of faulty operation of diesel engine fuel injection nozzles.
A.Excessive fuel nozzle holder cooling
B.Sediment in the fuel supply
C.Distortion of the fuel spray pattern
D.Improper atomization of the fuel
第9题：
has to be cooled
has heated
has preheated
has to be preheated
第10题：
affect the injection pressure
improve combustion
reduce compression pressure
decrease power output