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單項(xiàng)選擇題

To correct a hunting problem in a main propulsion diesel engine hydraulic governor, you should （）.

A.increase the governor oil pressure
B.adjust the speed droop setting
C.adjust the speeder spring travel
D.adjust the compensating needle valve

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單項(xiàng)選擇題

The （） engine is used for alternators and sometimes for main propulsion with a gearbox to provide a propeller of between 90 to 120 rpm.

A.four-stroke
B.two-stroke
C.slow speed
D.reversible

單項(xiàng)選擇題

As for turbine oil, contacting with water in the form of steam will be inevitable so good （） properties will be essential.

A.defrosting
B.de-oiling
C.demulsifying
D.dehumidifying