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单项选择题
A.Decreasing scavenge air pressure
B.Increasing exhaust temperatures before the turbine
C.Reduction in engine speed
D.All of the above
单项选择题
A.quality of air filtration
B.effectiveness of lubrication
C.type of fuel used
D.all of the above
单项选择题
A.cetane number
B.octane number
C.ignition index number
D.volatility point
单项选择题
A.antiknock characteristics
B.ignition qualities
C.rates of vaporization
D.viscosity
单项选择题
A.increase in starting air pressure
B.increase in lube oil viscosity
C.compression expansion device
D.jacket water heater
单项选择题
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
单项选择题
A.clogged fuel injection pumps
B.increased cylinder liner wear
C.intake valve stem corrosion
D.varnish deposit on pistons
单项选择题
A.Injection lag
B.Lube oil dilution
C.Pre-ignition
D.Corrosion
单项选择题
A.increase thermal efficiency
B.cause clogging of the fuel system
C.increase the ability of the engine to start in cold weather
D.produce corrosion in the cylinder and exhaust system at low loads
单项选择题
A.the engine to run after the fuel has been secured
B.the engine to over-speed
C.a fire
D.all of the above