A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
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A.Chain reaction
B.Thermal action
C.Chemical occlusion
D.Pyrotechnical reaction
A.starting the fire pumps
B.checking firemans outfits and other personnel rescue equipment
C.checking relevant communications equipment
D.All of the above
A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
A.Conduction of heat to adjacent surfaces
B.Direct radiation
C.Convection
D.All of the above
A.gas freed
B.inerted
C.filled with water
D.all of the above as necessary
最新試題
During the diesel engine running, the water level of F.W expansion tank should normally kept in the （） level of glass tube.
If separating effect is not good, which measure should be taken （）
By comparing the exhaust gas temperature of each cylinder, the operator can determine if the load is balanced throughout the engine. The device most commonly used is a（）
The condensers located in various stages of a flash evaporator are cooled by（）
（） is not installed on the main switchboar.
Diesel engine air start system check valves are opened by （）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
The main purpose of port State control is not to（）
The treatment of the fuel oils involves storage, heating, filtering and（）