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

Lube oil cannot be efficiently filtered if its （）.

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

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

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

Maximum horsepower of a diesel engine is attained （）.

Electrically operated safety devices on auxiliary diesel engines function to stop the engine by （）.

Routine monitoring of a diesel engine should include （）.

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