Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.

An automated diesel engine should normally shut down due to （）

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

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

If the water level dropped rapidly in the expansion tank of a closed diesel engine cooling water system, you should suspect a （）.

In a simple mechanical governor, the （）.

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

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

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

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