单项选择题
One characteristic of a pulse type turbo-charging system is（）
A.high average exhaust manifold
B.greatly fluctuating inlet manifold pressure
C.constant exhaust manifold pressure
D.multiple exhaust pipes to the turbocharger
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相关考题
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单项选择题
One advantage of dry cylinder liners used in a diesel engine is the（）
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
Intake air flow from a diesel engine turbocharger is directly proportional to engine（）
A.exhaust gas pressure
B.exhaust gas temperature
C.speed
D.load -
单项选择题
Which of the listed conditions can be used to determine if lube oil has been diluted by fuel? （）
A.Viscosity is decreased
B.Octane number is altered
C.Pump speed is decreased
D.Blower’s speed is decreased
