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

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

Lube oil cannot be efficiently filtered if its （）.

When would the available energy of the exhaust gases of a two-stroke/cycle diesel engine be insufficient to drive an exhaust gas turbocharger, resulting in the incorrect amount of air for combustion?（）

A thrust bearing is used with a propulsion diesel engine to （）.

Routine monitoring of a diesel engine should include （）.

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

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

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

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