To determine if the lube oil filter elements need changing, （）.

Lube oil cannot be efficiently filtered if its （）.

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

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?（）

In a simple mechanical governor, the （）.

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

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

Routine monitoring of a diesel engine should include （）.

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

Combustion knock can occur in the cylinders of a diesel engine under any condition permitting （）.