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

What is the function of the thrust bearing?（）

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

Lube oil cannot be efficiently filtered if its （）.

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

Maximum horsepower of a diesel engine is attained （）.

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

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

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

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