A.class A
B.class B
C.class C
D.class D
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A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
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
最新試題
The main purpose of port State control is not to（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
Using a file without a handle may result in （）
（） is not installed on the main switchboar.
When does auxiliary burner of incinerator put into operation? （）Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish
Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?（）
（）connectors hold best if a wire is accidentally pulled or a connection becomes loose.
The cetane rating of diesel fuel is an indication of the （）
Which of the following items don’t belong to dock repair works?（）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）