pull the nozzle handle all the way back toward the operator
pull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzle
push the nozzle handle forward as far as it will go
insert a fog applicator between the fire hose and nozzle
第1题:
The difference in water spray pattern between the high-velocity tip and low-velocity applicator used with the all-purpose nozzle is due to ______.
A.a difference in water pressure
B.the method of breaking up the water stream
C.the length of the applicator
D.All of the above
第2题:
The high-velocity fog tip used with the all-purpose fire fighting nozzle should always be ______.
A.Attached by a chain
B.Coated with heavy grease to prevent corrosion
C.Painted red for identity as emergency equipment
D.Stored in the clip at each fire station
第3题:
One advantage of the all-purpose nozzle is that it ______.
A.can fit any size hose
B.converts a stream of water into a fog
C.increases the amount of water reaching the fire
D.can spray two streams of water at the same time
第4题:
Radiation fog
Frontal fog
Convection fog
Advection fog
第5题:
the pump supply pressure
the slope of the fuel cam
how the plunger is rotated
the number of sleeve segments engaged with the rack
第6题:
If a firefighting situation calls for low-velocity fog you would ______.
A.order the engine room to reduce pressure on the fire pump
B.put the lever on an all-purpose fire nozzle all the way forward
C.attach a low-velocity fog applicator with the nozzle shut down
D.put the lever on an all-purpose fire nozzle all the way back
第7题:
order the engine room to reduce pressure on the fire pump
put the lever on an all-purpose fire nozzle all the way forward
attach a low-velocity fog applicator with the nozzle shut down
put the lever on an all-purpose fire nozzle all the way back
第8题:
A mobile offshore drilling unit under tow is approaching a fog bank. When should fog signals be started?
A.When the towing vessel enters the fog
B.When the drilling rig enters the fog
C.When the towing vessel can no longer be seen from the rig
D.Immediately
第9题:
Your speed must be reduced to bare steerageway
A look-out is not required if the radar is on
Fog signals are only required when a vessel is detected by radar
The radar should always be kept on a short-range scale
第10题:
shut
fog
solid stream
spray