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
您可能感興趣的試卷
你可能感興趣的試題
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
A.vapor to oxygen
B.the flammable limit concentration
C.the autoignition concentration
D.the lower explosive limit concentration
A.fuel oil
B.wood
C.celluloid
D.electrical insulation
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（）.
Each fire hose coupling on a ship must have threads that meet the specifications of the（）.
If，during helicopter refueling operations，fuel is spilled on clothing，the person should first（）.
A fire must be ventilated（）.
Dry chemical fire extinguishers are effective on which type(s) of fire?（）
During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.
Each fire hydrant serving machinery spaces containing oil fired boilers，internal combustion machinery，or oil fuel units must be equipped with a（）.
Combustible gas indicators measure the presence of combustible gas as a percentage of the（）.
A fire main system must have enough fire hydrants so that each accessible space may be sprayed with（）.
A fire pump may be used for other purposes if（）.