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單項選擇題

The pressure difference before and after the lube oil filter indicates （）the filter should be cleaned.

A.when
B.how
C.where
D.whether

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A diesel engine which is rated for normal operation at a crankshaft speed of 800 RPM, is commonly classed as a （）.
A.slow-speed diesel
B.medium-speed diesel
C.high-speed diesel
D.constant-speed diesel
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The three basic parts of any eductor are the nozzle, the suction chamber, and the （）.
A.injector
B.compressor
C.diffuser
D.siphon
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（）, the engine must be stopped immediately.
A.Should knocking occur
B.If knocking occur
C.Should if knocking occurs
D.If occur knocking
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Grind the （）.
A.keyway
B.shaft
C.packing
D.valve
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Which of the following can be obtained by means of an indicator card?（）
A.the peak pressure in a cylinder
B.the temperature of the cooling water
C.the fuel consumption
D.none of the above
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The lower section of a piston is called the （）.
A.land
B.skirt
C.crown
D.plate
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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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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
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Precision engine bearing inserts are manufactured with a small portion of the bearing ends extending beyond the bearing housing or capsThe installation process of these bearings requires sufficient （）.
A.overlap
B.crush
C.lap or lead
D.protrusion

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