What is the function of the thrust bearing?（）

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

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

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

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

The ability of the governor to prevent fluctuations in engine speed is termed （）.

Proper filtering and straining of fuel oil is important because the （）.

Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）

The function of diesel engine piston compression rings is to （）.

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