单项选择题
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
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A.Increases efficiency
B.Increases engine horsepower
C.Increases engine life
D.Reduces engine horsepower -
单项选择题
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
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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
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