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
更多“A fire hose has a（）.”相关的问题
A、use different fire hose pressures B、use fire hoses of different sizes C、not attack the fire from opposite sides D、not wear protective clothing
A、threads are lubricated B、nozzle is attached to the hose C、female coupling has a gasket D、hose is led out
A、cross connection line between two main fire lines B、special wrench for the couplings in a fire hose line C、tackle rigged to support a fire hose D、none of the above
A、cross connection line between two main fire lines B、special wrench for tightening couplings in a fire hose line C、tackle rigged to support a fire hose D、None of the above
A、A.cross connection line between two main fire lines B、B.special wrench for the couplings in a fire hose line C、C.tackle rigged to support a fire hose D、D.None of the above
A、fire hose might be damaged by cargo operations B、vessel is in port C、fire-main system is not charged D、fire pumps are used for purposes other than supplying water to the fire main
A、American Petroleum Institute B、National Standard Fire hose Coupling C、American Society of Mechanical Engineers D、Underwriter's Laboratories，Inc
A、Start each fire pump B、Launch and run a lifeboat C、Inspect fire hoses D、Close each fire pump
A、Start each fire pump B、Launch and run a lifeboat C、Inventory rescue and fire equipment D、Inspect fire hoses
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