Foam-type portable fire extinguishers are most useful in combating fires involving（）.

Fire may be spread by which means?（）.

Fire and abandon ship stations and duties may be found on the（）.

Fire hose should be washed with（）.

Halon extinguishes fire primarily by（）.

Foam extinguishes a fire mainly by（）.

Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.

Firefighting foam is only effective when the foam（）.

CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.

Fire fighting equipment requirements for a particular vessel may be found on the（）.