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

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

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

Lube oil cannot be efficiently filtered if its （）.

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

Diesel engine control can be obtained by the bridge （）.

What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）

The minimum speed an engine must attain before ignition can occur depends upon （）.

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

Routine monitoring of a diesel engine should include （）.