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

Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.

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

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

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

If the main engine of an unattended engine room shuts down automatically, it will be indicated by an alarm （）.

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

In diesel engines, the four basic events (intake, compression, power and exhaust) are performed once in （）.

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

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