A.pump suctions
B.pump discharge
C.fire hydrants
D.hose nozzle
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A.In crews accommodation spaces
B.On the navigating bridge
C.In the engine room
D.All of the above
A.remove oxygen from the area
B.smother fire with foam
C.smother fire with CO2
D.cool fuel below ignition temperature
A.low-velocity fog
B.high-velocity fog
C.a straight stream of water
D.foam spray
A.can not be ignited by a spark unless the vapor is in a confined space
B.are nontoxic in all concentrations
C.can not be ignited by a spark unless they are at their auto-ignition temperature
D.are heavier than air
A.fuel
B.oxygen
C.heat
D.electricity
最新試題
The shipboard oil pollution emergency plan will be invalid after （）
If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）
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
（）are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.
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.
If separating effect is not good, which measure should be taken （）
Flame failure in an automatically fired auxiliary boiler can from a/an （）
To shut down a diesel engine after it exceeds the set maximum speed，which type of device listed should be used?（）
For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?（）