单项选择题
A.reduce water temperature B.reduce water turbulence C.provide an air cushion D.allow for an increase in water volume as the engine warms up
For a continuous operation diesel engine, a duplex filt...
单项选择题For a continuous operation diesel engine, a duplex filter unit would be the best arrangement because （）.
A.changing filter elements would not interrupt engine operation B.filtering occurs twice in each pass of oil through the system C.clogging will not occur D.dropping pressure is half of that through a single filter unit
An increase in the air inlet manifold pressure of a die...
单项选择题An increase in the air inlet manifold pressure of a diesel engine will result in a/an （）.
A.decrease in maximum cylinder pressure B.increase in ignition lag C.decrease in fuel consumption per horsepower-hour D.decrease in exhaust manifold pressure
The overspeeding of the diesel engine driving an electr...
单项选择题The overspeeding of the diesel engine driving an electric generator could cause （）.
A.low voltage trip to trip B.reverse power trip to trip C.damage to windings D.excessive exhaust temperatures
