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

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

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

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

Routine monitoring of a diesel engine should include （）.

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

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 （）.

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

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