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單項選擇題

The vessel is out of harbor and in “Full Ahead”We are going to run fuel oil instead of （） and open the fuel oil heater steam valve.

A.heavy oil
B.lube oil
C.fuel oil
D.diesel

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單項選擇題

The two-stroke cycle begins with the piston coming up from the bottom of its stroke, with scavenge ports in the sides of the cylinder being （）.

A.shut
B.closing
C.opened
D.closed

單項選擇題

The term medium speed diesel engine is currently taken to mean an engine with an operating rotational speed of （） rpm.

A.below 300
B.above 1200
C.between 300 to 1200
D.below 1200

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