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

What is the function of the thrust bearing?（）

The main purpose of the piston oil scraper rings is to （）.

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

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

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

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

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

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

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?（）