单项选择题

Which of the turbo-charging systems listed operates with the least average back pressure in the exhaust manifold?（）

A.Constant volume
B.Constant pressure
C.Pulse pressure
D.Radial flow

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A.Water discharging from the water outlet of the lube oil purifier
B.Fuel oil discharging from the water outlet of the lube oil purifier
C.Lube oil discharging from the water outlet of the lube oil purifier
D.A change in the lube oil viscosity

If a single cylinder relief valve on a diesel engine li...

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A.excessively late injection timing for each cylinder
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C.incorrectly adjusted fuel injector
D.incorrectly adjusted intake valve clearance

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D.Integral water-jacket liner

船舶电气与船舶安全

Which of the turbo-charging systems listed operates with the least average back pressure in the exhaust manifold?（）