單項選擇題A four-stroke cycle, turbocharged, 1000 horsepower diesel engine has been operating under loadThe load suddenly increases, causing excessive black exhaust smoke, and a rapid rise in the lube oil temperatureIn response to this condition, you should:（）

A.reduce load
B.check your exhaust
C.adjust cooling water temperature
D.increase lube oil flow


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1.單項選擇題Which of the following procedures should be carried out when a large, low-speed, diesel engine is operated with one cylinder secured?（）

A.Lubrication to the defective cylinder should be increased
B.Cooling water temperature to the engine should be increased
C.Only the turbocharger speed should be reduced
D.Engine speed should be reduced

2.單項選擇題A diesel engine could fail to start because of （）

A.incorrect injection timing
B.low exhaust back pressure
C.floating exhaust valves
D.excessive cranking speed

3.單項選擇題Excessive vibration in an operating diesel generator may be caused by （）

A.electrical overload
B.surging at governed RPM
C.loose engine mounting bolts
D.coolant leaking into the cylinder

4.單項選擇題If you observe smoke coming from the turbocharger of an auxiliary diesel engine, you should（）

A.check the air filter for obstruction
B.check for an exhaust leak
C.check the exhaust temperature
D.secure the engine

5.單項選擇題Clogged or partially obstructed exhaust ports on a diesel engine can cause（）

A.over-speeding of the engine
B.failure of the engine to shut down
C.no effect of engine mounting bolts
D.high exhaust temperatures