單項選擇題A dry-type exhaust muffler clogged with soot, will cause()

A.low exhaust temperature
B.loss of engine power
C.burned intake valves
D.engine racing


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1.單項選擇題An operating turbocharged diesel engine that suddenly loses power, is due to a/an()

A.restricted turbocharger air intake
B.oil leak into the turbocharger
C.dribbling injector
D.low fuel viscosity

3.單項選擇題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

4.單項選擇題Which of the following conditions indicates the dilution of diesel engine lube oil by fuel oil?()

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

5.單項選擇題If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an ()

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