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

Engine protection by means of an alarm or shutdown control can be obtained with devices that are sensitive to （）.

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

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

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

For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.

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

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

To determine if the lube oil filter elements need changing, （）.

Lube oil cannot be efficiently filtered if its （）.