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單項(xiàng)選擇題

The viscosity regulator controls （） in order to provide oil at the correct viscosity for combustion.

A.the engines speed
B.the engines load
C.the fuel oil temperature
D.the fuel oil flow

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單項(xiàng)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

單項(xiàng)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

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