A.vapor to oxygen
B.the flammable limit concentration
C.the autoignition concentration
D.the lower explosive limit concentration
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A.fuel oil
B.wood
C.celluloid
D.electrical insulation
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
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
最新試題
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（）.
Cargo transfer operations on a tanker need NOT be stopped when（）.
A fire is discovered in the forepeak of a vessel at sea. The wind is from ahead at 35 knots. You should（）.
Convection spreads a fire by（）.
A fire pump may be used for other purposes if（）.
A fire in electrical equipment should be extinguished by using（）.
Backfire flame arrestors are installed on（）.
A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
Automatic fire dampers in ventilation systems are operated by use of（）.
Automatic fire dampers in ventilation systems are operated by a（）.