单项选择题
Fire dampers prevent the fire spreading through the process of （）.
A.convection
B.conduction
C.radiation
D.direct contact
点击查看答案&解析
相关考题
-
单项选择题
A fire, occurring in the windings, of an overloaded electrical motor, is considered a （）.
A.class "A" fire
B.class "B" fire
C.class "C" fire
D.class "D" fire -
单项选择题
On a cargo vessel, fire and boat drills must be held within 24 hours of leaving port if the percentage of the crew replaced is more than （）.
A.5%
B.10%
C.25%
D.40% -
单项选择题
Which of the listed materials would be considered as a bunting class "C" fire?（）
A.Fuel oil
B.Wood
C.Celluloid
D.Electrical insulation
