Fire may be spread by which means?（）.

A、Conduction of heat to adjacent surfaces

B、Direct radiation

C、Convection

D、All of the above

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第1题

[] Fire may be spread by which means?（）

A、A.Conduction of heat to adjacent surfaces  B、B.Direct radiation  C、C.Convection  D、D.All of the above  

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第2题

[单选题] A fire may be spread by which of the following means?（）

A、Conduction of heat to adjacent surfaces  B、Direct radiation  C、Convection  D、All of the above  

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第3题

[单选题] Fire may ba spread by which means?（）.

A、Conduction of heat to adjacent surfaces  B、Direct radiation  C、Convection  D、All of the above  

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第4题

[单选题] Blocking open or removing fire dampers can cause（）.

A、fixed foam systems to be ineffective  B、faster cooling of the fire  C、the accumulation of explosive gases  D、the fire to spread through the ventilation system  

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第5题

[单选题] In the event of a fire, the doors to a stair tower must be closed to prevent the spread of fire by （）.

A、convection  B、conduction  C、radiation  D、ventilation  

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第6题

[] The blocking or absence of fire dampers can cause（）.

A、A.the accumulation of explosive gases  B、B.faster cooling of the fire  C、C.the fire to spread through the ventilation system  D、D.fixed foam systems to be ineffective  

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第7题

[单选题] Multiple fire pumps may be used for other purposes provided that one pump is（）.

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  