A.preventing oxygen from reaching the burning material
B.cooling the burning material below its ignition temperature
C.using the extinguishing agent to make the burning material fire-resistant
D.using the extinguishing agent to absorb the heat
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A.the mimimum fire extinguishing equipment，lifejackets，survival and rescue craft she must carry
B.the name of the managing operator
C.any special conditions or restrictions on her operation
D.All the above
A.pressure release
B.backfire flame arrestor
C.automatic shut off
D.flow valve
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
最新試題
A fire in electrical equipment should be extinguished by using（）.
Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.
During a fire drill on a ship，what action is required?（）
Cargo transfer operations on a tanker need NOT be stopped when（）.
Convection spreads a fire by（）.
Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.
During a training exercise a submarine indicating that a torpedo has been fired will send up smoke from a float. The smoke’s color will be（）.
Control of flooding should be addressed（）.
Automatic fire dampers in ventilation systems are operated by use of（）.
During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.