A.salt water
B.foam
C.low-velocity fog
D.CO2
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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
A.male coupling at both ends
B.female coupling at both ends
C.female coupling at the nozzle end and a male coupling at the hydrant end
D.male coupling at the nozzle end and a female coupling at the hydrant end
A.blows the fire back toward the vessel
B.comes over the bow
C.comes over the stern
D.comes over either beam
A.alternate expansion and contraction as water in a liquid state becomes a vapor
B.absorption of smoke and gases as water is converted from a liquid to a vapor
C.rapid contraction as water is converted from a liquid to a vapor
D.rapid expansion as water absorbs heat and changes to steam
A.damage from crane operations
B.being used for wash down purposes
C.accidental diversion of flow to wrong location
D.freezing
最新試題
Backfire flame arrestors are installed on（）.
Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.
If，during helicopter refueling operations，fuel is spilled on clothing，the person should first（）.
According to the T-Boat regulations the reason for providing adequate ventilation for a battery storage area is to prevent（）.
On a hydrocarbon flammability chart the line which extends from 0% to 21.8% oxygen，lying tangent to the flammability range，is called the（）.
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?（）
A fire pump may be used for other purposes if（）.
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（）.
Before a tank is to be crude oil washed，the oxygen content in the tank must be measured at a position（）.