Each hose used for transferring vapors must（）.

Fire protection regulations for towing vessels require all crew members to know how to perform each of these tasks EXCEPT（）.

During the month of October the Sun’s declination is（）.

Each EPIRB required on a ship shall be stowed in a manner which will permit（）.

Each hand portable fire extinguisher on a ship must be marked with（）.

Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.

During which condition should the operator of a pedestal crane shutdown operations?（）

Each hand portable，semi-portable and fixed fire extinguishing unit on a ship must be tested and inspected at least once every（）.

Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.

Fire protection regulations for towing vessels allow all of these types of fuel piping，EXCEPT（）.