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

The main purpose of the piston oil scraper rings is to （）.

Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.

When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）

In using reduction gears to obtain efficient propeller speeds, （）.

A diesel engine piston ring face is in direct contact with the （）.

Lube oil cannot be efficiently filtered if its （）.

Routine monitoring of a diesel engine should include （）.

Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.

If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.