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

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

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

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 （）.

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

In using reduction gears to obtain efficient propeller speeds, （）.

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

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

What is the function of the thrust bearing?（）