A.the single hook at the top of the raft B.two lines passed under the raft C.the towing bridle D.All of the above
A.are made of bronze，brass，or soft alloy metals B.should be painted red in order to identify hose lengths C.are specially hardened to prevent crushing D.should be greased frequently
A.able to absorb heat B.water based C.nonconducting D.nontoxic
A.8the heat of a fire melting the link B.a break-glass and pull-cable system C.electrical controls on the bridge D.a mechanical arm outside the vent duct
A.cooling B.smothering C.shielding of radiant heat D.breaking the chain reaction
A.smoke sensors B.the difference in thermal expansion of two dissimilar metals C.pressure loss due to air being heated D.an electric eye which actuates when smoke interferes with the beam
A.Conduction of heat to adjacent surfaces B.Direct radiation C.Convection D.All of the above
A.over pressurization of the space being flooded B.rupture of cylinder due to temperature increase C.over pressurization of the CO2 discharge piping D.flooding of a space where personnel are present
A.contains 15 pounds of CO2 B.weighs 15 pounds when full of CO2 C.has 15 pounds of pressure at the nozzle D.weighs 15 pounds when empty
A.4Certificate of Inspection B.Certificate of Seaworthiness C.Classification Certificate D.Certificate of Registry
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