单项选择题X 纠错
A.engine power losses
B.smoking due to unburned fuel
C.high exhaust temperature readings
D.all of the above
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单项选择题
A.incorrect replacement of barrels and plungers of jerk pumps
B.overheating of the nozzle orifices
C.cracked pump housings
D.dirt in the fuel
单项选择题
A.tachometer
B.pyrometer
C.dynamometer
D.calorimeter
单项选择题
A.employing fuel oil as a cooling medium
B.preventing hard carbon deposit on nozzle tips
C.avoiding fuel oil temperature exceeding builder’s specification
D.ensuring good metallic contact between nozzles and cylinder heads
单项选择题
A.it is fitted with neoprene O-ring seals
B.the honing process makes it easier to maintain the desired oil film
C.there is likelihood of water leaking into the combustion space
D.it fits more loosely due to a decrease in heat transfer through the composite wall
单项选择题
A.high average exhaust manifold
B.greatly fluctuating inlet manifold pressure
C.constant exhaust manifold pressure
D.multiple exhaust pipes to the turbocharger
单项选择题
A.lower thermal expansion rates than wet liners
B.greater heat transfer rate than wet liners
C.greater wear resistance than wet liners
D.procedure to replace dry liners is simpler than for wet liners
单项选择题
A.exhaust gas pressure
B.exhaust gas temperature
C.speed
D.load
单项选择题
A.Viscosity is decreased
B.Octane number is altered
C.Pump speed is decreased
D.Blower’s speed is decreased
单项选择题
A.of the thin wall thickness
B.honing makes it easier to maintain the desired oil ilm
C.water seals are not required
D.it fits more loosely due to a decrease in heat transfer through the composite wall
单项选择题
A.Constant pressure
B.Pulse
C.constant velocity
D.Axial flow