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

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

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

Control of the main propulsion diesel engines can be shifted from the engine room to the wheelhouse from the （）.

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

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 （）.

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

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

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