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

Maximum horsepower of a diesel engine is attained （）.

What is the function of the thrust bearing?（）

In a simple mechanical governor, the （）.

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

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

Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）

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

When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.

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