A.pressure release
B.backfire flame arrestor
C.automatic shut off
D.flow valve
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A.at least annually
B.whenever it is below its required weight
C.only if the extinguisher has been used
D.before every safety inspection
A.a continuous ringing for 10 seconds
B.one short ring followed by one long ring
C.two long rings of at least 20 seconds
D.a continuous ringing until the fire is extinguished
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Controls for a fixed carbon dioxide system shall be mounted（）.
Each fireman’s outfit and its spare equipment on a vessel must be stowed（）.
Dry chemical fire extinguishers are effective on which type(s) of fire?（）
Control of flooding should be addressed（）.
A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
Convection spreads a fire by（）.
CO2 extinguishes a fire by（）.
A fire must be ventilated（）.
Blocking open or removing fire dampers can cause（）.
Each fire pump on a ship must have a pressure gauge located at（）.