单项选择题A fire pump may be used for other purposes if().

A.the other services are run off a reducing station with a pressure gage
B.one of the required pumps is kept availabe for use on the fire main system at all times
C.no relief valves are installed
D.all of the above conditions are met


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1.单项选择题A fire must be ventilated().

A.when using an indirect attack on the fire such as flooding with water
B.to prevent the gases of combustion from surrounding the firefighters
C.to minimize heat buildup in adjacent compartments
D.if compressed gas cylinders are stowed in the compartment on fire

2.单项选择题A fire main system must have enough fire hydrants so that each accessible space may be sprayed with().

A.a low velocity spray applicator
B.a water spray or solid stream
C.at least two spray patterns of water
D.at least 25 psi delivered pressure

3.单项选择题A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should().

A.remain on course and hold speed
B.change course and put the stern to the wind
C.change course to put the wind on either beam and increase speed
D.remain on course but slack the speed

4.单项选择题A fire in electrical equipment should be extinguished by using().

A.salt water
B.foam
C.low-velocity fog
D.CO2

5.单项选择题A fire in a ballast pumproom can be brought under control with minimal impact on stability by().

A.cooling the outside bulkheads with water
B.shutting all sources of air into the compartment
C.closing the sea chest
D.flooding the compartment with salt water

6.单项选择题A fire hose has a().

A.male coupling at both ends
B.female coupling at both ends
C.female coupling at the nozzle end and a male coupling at the hydrant end
D.male coupling at the nozzle end and a female coupling at the hydrant end

7.单项选择题A fire has broken out on the stern of your vessel. You should maneuver your vessel so the wind().

A.blows the fire back toward the vessel
B.comes over the bow
C.comes over the stern
D.comes over either beam

8.单项选择题A definite advantage of using water as a fire extinguishing agent is its characteristic of().

A.alternate expansion and contraction as water in a liquid state becomes a vapor
B.absorption of smoke and gases as water is converted from a liquid to a vapor
C.rapid contraction as water is converted from a liquid to a vapor
D.rapid expansion as water absorbs heat and changes to steam

9.单项选择题A cutoff valve in the fire-main system of a ship may be closed to protect the portion of the system on an exposed deck from().

A.damage from crane operations
B.being used for wash down purposes
C.accidental diversion of flow to wrong location
D.freezing

10.单项选择题A combustible gas indicator meter is calibrated to read the percentage of().

A.vapor to oxygen
B.the flammable limit concentration
C.the autoignition concentration
D.the lower explosive limit concentration