【单选题】
Fire dampers prevent the spread of fire by（）.
A、conduction
B、convection
C、radiation
D、direct contact
查看正确答案A、convection B、conduction C、radiation D、direct contact
搜题
更多“Fire dampers prevent the spread of fire by（）.”相关的问题
第3题
A、Fusible links must be replaced if a damper is activated B、Fusible links are tested by applying a source of heat to them C、Fusible links must be replaced at every inspection for certification D、A fusible link will automatically open after a fire is extinguished and reset the damper
第4题
A、A fusible link will automatically open after a fire is extinguished and reset the damper B、Fusible links must be replaced at every inspection for certification C、Fusible links are tested by applying a source of heat to them D、Fusible links must be replaced if a damper is activated
第7题
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
第8题
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
第9题
A、a break-glass and pull-cable system B、electrical controls on the bridge C、a mechanical arm outside the vent duct D、the heat of a fire melting the link
