單項選擇題Air in the fuel can cause（）

A.high lube oil temperature
B.blue smoke
C.the engine to stop
D.piston seizure


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1.單項選擇題Which of the following operating procedures should be carried out immediately after any diesel engine is started?（）

A.Take all exhaust temperature reading
B.Check the sump oil level
C.Verify proper lube oil pressure
D.All of the above

2.單項選擇題Which of the following conditions would cause carbon deposits to form in the piston ring belt of a diesel engine?（）

A.faulty combustion
B.excessive ring temperature
C.over lubrication
D.all of the above

3.單項選擇題The high air velocity leaving the compressor of an exhaust gas turbocharger is converted to pressure in the （）

A.inlet nozzle ring
B.turbine wheel blade
C.diffuser passages
D.inlet vol

4.單項選擇題When attempting to restart a warm high-speed engine, which of the following reactions can you expect?（）

A.Excessive fuel
B.Higher than normal temperatures for star up
C.Longer starting periods
D.Higher than normal lube oil pressure

5.單項選擇題An increase in the load on a turbocharged diesel engine operating at constant speed will result in an increase in （）

A.exhaust
B.air box pressure
C.brake main effective pressure
D.all of the above