單項(xiàng)選擇題

Combustion knock occurring in a diesel engine can be caused by （）.

A.excessive fuel penetration
B.prolonged injection lag
C.reduced ignition lag
D.prolonged ignition lag

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A thrust bearing is used with a propulsion diesel engine to （）.

A.control axial movement of the crankshaft
B.transmit engine thrust to the propeller shaft
C.absorb vibrations in the propeller shafting
D.prevent propeller thrust from being transmitted to the hul

單項(xiàng)選擇題

Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.

A.wheelhouse control station
B.engine room control station
C.captains office
D.chief engineers office