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

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

The function of diesel engine piston compression rings is to （）.

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?（）

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

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

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

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

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

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