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

The highest pressure in a diesel engine cylinder normally occurs （）.

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

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

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

When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.

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

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

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

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