A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
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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
A.Static electricity
B.An open running electric motor
C.Loose wiring
D.Explosion proof lights
A.Class "A"
B.Class "B"
C.Class "C"
D.Class "D"
A.convection
B.conduction
C.radiation
D.direct contact
最新試題
Flame failure in an automatically fired auxiliary boiler can from a/an （）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）
One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is（）
The shipboard oil pollution emergency plan will be invalid after （）
Refrigerant entering the compressor of a refrigeration system should be in which of the following conditions?（）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
The condensers located in various stages of a flash evaporator are cooled by（）
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 main purpose of port State control is not to（）
The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the（）