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

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

What is the function of the thrust bearing?（）

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

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

In a simple mechanical governor, the （）.

White smoke exhausting from an operating diesel engine may indicate （）.

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

Lube oil cannot be efficiently filtered if its （）.

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