单项选择题

A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an（）

A.turbocharger malfunction or failure
B.crankcase exhauster overload
C.overload on the intercooler
D.obstruction in the engine cylinders

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If a diesel engine has been stopped because of piston seizure due to severe overheating, the crankcase（）

A.inspection covers should not be opened until the engine has cooled
B.ventilation system should be continued in operation for one hour for cooling
C.scavenge pump should be immediately secured to prevent loss of lube oil
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If the turbocharger failed on an auxiliary diesel engine, which of the following conditions would probably occur?（）

A.Full power cannot be developed
B.The exhaust will contain black smoke
C.Complete combustion will be impossible
D.All of the above