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 （）.

The most important factor in engine performance is the actual power output at the end of the crankshaft available for doing workThis is known as （）.

Routine monitoring of a diesel engine should include （）.

Lube oil cannot be efficiently filtered if its （）.

Lube oil filters remove contaminants more efficiently if the oil being filtered is （）.

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

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

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

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