單項選擇題What is the purpose of the intake/exhaust valves in a diesel engine? ()

A.They regulate the combustion cycle
B.They supply cooling water
C.They synchronize the ignition spark
D.They supply and regulate the lubricant flow


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1.單項選擇題What is the operating principal of a flash type evaporator?()

A.Sea water is heated to boiling temperature under a vacuum
B.Sea water is passed over heated plates in a thin film
C.Heated sea water is injected into a vacuum chamber
D.Sea water is forced through a heated eductor

2.單項選擇題What is the effect of heated intake air on a diesel engine? ()

A.Increases efficiency
B.Increases engine horsepower
C.Increases engine life
D.Reduces engine horsepower

3.單項選擇題What is one effect of running a diesel engine at too cool a temperature? ()

A.Buildup of sludge in the lubricating system
B.Excessive fuel consumption
C.Severe heat stresses on mechanical parts
D.Foaming of the lubricating oil

4.單項選擇題What is an advantage of diesel over steam turbine propulsion? ()

A.Less fuel consumption per SHP
B.Diesel fuel costs less than bunker C or its equivalent
C.Less routine maintenance required
D.Less weight per SHP

5.單項選擇題What is an advantage of a steam turbine over a diesel for the main propulsion?()

A.Faster response from ahead to astern
B.Less fuel consumption
C.Cheaper initial installation cost
D.Less weight per unit of horsepower