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

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

In a simple mechanical governor, the （）.

What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）

How many power strokes per crankshaft revolution are there in an eight cylinder, two stroke/cycle diesel engine?（）

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

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

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

For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.

An automated diesel engine should normally shut down due to （）