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
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相关考题
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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 -
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 -
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
