A、45°upward
B、vertically upward
C、vertically downward
D、all of the above
更多“The outlet at a fire hydrant may be positioned anywhere from horizontal to pointing（）.”相关的问题
A、A.at the jacket cooler outlet to control the flux through the engine B、B.at the jacket cooler outlet to control the flux through the cooler C、C.at the engine outlet to control the flux through the engine D、D.at the engine inlet to control the flux through the engine
A、using a 2-1/2 inch hose B、there is an outlet for the smoke and heat C、the fire is totally contained by the ship's structure D、at least two fog streams can be used
A、at the top of the flames B、at the base of the fire near the edge C、in short quick bursts D、toward the upwind side of the fire
A、all hands are at their fire stations B、all fire-fighting equipment is at the scene C、the fixed systems are activated D、the fire is contained and no longer spreading
A、A.jacket water outlet B、B.cooling water pump outlet C、C.heat exchanger outlet D、D.expansion tank atmospheric vent
A、over the top of the flames B、off a bulkhead into the fire C、in front of the fire D、at the base of the fire
A、on line to the fire main B、kept available for use on the fire main at all times C、capable of being connected to the fire main D、rated at or above 125 psi
A、A.locate the fire B、B.determine which type of fire is burning C、C.sound the alarm D、D.fight the fire
A、jacket water outlet B、expansion tank inlet C、heat exchanger inlet D、cooling water pump outlet
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