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【单项选择题】

On the all-purpose nozzle，the position of the valve when the handle is all the way forward is（）.

A、A.shut

B、B.fog

C、C.solid stream

D、D.spray

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更多“On the all-purpose nozzle，the position of the valve when the handle is all the way forward is（）.”相关的问题
第1题
[单选题] 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  

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第2题
[单选题] The 12-foot low-velocity fog applicator（）.

A、has a spray pattern 12 feet in diameter  B、can be used in conjunction with both 1-1/2 inch and 2-1/2 inch all-purpose nozzles  C、has a 90°bend at its discharge end  D、has a screw thread end which connects to the all-purpose nozzle  

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第3题
[单选题] The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.

A、shield fire fighters from radiant heat  B、break up burning material  C、get the most water possible on the fire  D、drive heat and smoke ahead of the fire fighters  

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第4题
[单选题] 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  

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第5题
[] Water fog from an all-purpose nozzle may be used to（）.

A、A.fight an electrical fire  B、B.fight a magnesium fire  C、C.eliminate smoke from a compartment  D、D.All of the above  

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第6题
[] When fighting an oil or gasoline fire in the bilge，which of the following should NOT be used?（）

A、A.Foam  B、B.Solid stream water nozzle  C、C.All-purpose nozzle  D、D.Carbon dioxide  

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第7题
[单选题] The all-purpose nozzle will produce a fog spray when you（）.

A、pull the nozzle handle all the way back toward the operator  B、pull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzle  C、push the nozzle handle forward as far as it will go  D、insert a fog applicator between the fire hose and nozzle  

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第8题
[单选题] 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  

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第9题
[单选题] On a ship，a fire pump may be used for other purposes if（）.

A、the other services are run off a reducing station with a pressure gage  B、a separate fire pump is available for use on the fire main  C、all other services are operated by a manifold near the pump  D、All of the above  

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