默认题库 - 应急预案与EMS

单选题

Which is a disadvantage of Halon as a fire extinguishing medium?（）

A. Conducts electricity
B. Difficult to store
C. Large volume necessary to be effective
D. Ineffective in powdered metal fire

查看答案

单选题

Where should life jackets be stowed?（）.

A. In the forepeak
B. In the wheelhouse
C. Throughout the accommodation spaces
D. In locked watertight and fireproof containers on or above the main deck

查看答案

单选题

When using a high-velocity fog stream in a passageway，the possibility of a blow back must be guarded against. Blow back is most likely to occur when（）.

A. pressure builds up in the nozzle which causes a surge of water
B. the only opening in a passageway is the one from which the nozzle is being advanced
C. pressure in the fire hose drops below 100 psi
D. a bulkhead collapses due to heat and pressure

查看答案

单选题

When used to fight fire，carbon dioxide（）.

A. is effective if used promptly on an oil fire
B. has a greater cooling effect than water
C. is lighter than air
D. is harmless to cargo and crew

查看答案

单选题

When inspecting a tank barge to see that it has all the required fire extinguishers and other safety items aboard，which of the following is the best source for determining what is required?（）

A. The supervisor in charge of the dock to which the barge is tied up
B. Part 38 of the Rules and Regulations for Tankers
C. The Certificate of Inspection of the barge
D. The local fire marshal

查看答案

单选题