單項(xiàng)選擇題The fire extinguishing action of CO2 comes mostly from ().

A.breaking the fire chemical chain reaction
B.smothering
C.cooling
D.isolating the heat from the fuel


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題The amount of expansion space to be left in a fuel tank when fuel oil is being received, is determined by the ().

A.quantity of fuel to be received
B.flash point of the fuel as it is received
C.fuel temperature as it is received
D.viscosity of the fuel being received

2.單項(xiàng)選擇題If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should ().

A.close the static leg filling valve
B.close the overflow tank falling valve
C.reduce the fuel oil pumping rate
D.stop the fuel oil pumping operation

3.單項(xiàng)選擇題After fuel tanks have been topped off, which of the listed procedures should be followed next?()

A.The pressure-vacuum relief valve should be reset
B.The tanks should be made seaworthy to prevent contamination
C.The tanks should be sounded to make sure the levels are not rising
D.The tanks should be marked with a bull stamp on the manifold filling valve

4.單項(xiàng)選擇題The most critical part of the bunkering operations, which can result in an oil spill, is when the ()

A.hose joints are made up
B.tanks are being topped off
C.system is being lined up
D.pumping operation is first started

5.單項(xiàng)選擇題During fueling operations, which of the listed precautions should be taken when topping off fuel tanks?()

A.Reduce the pumping rate by closing the deck filling valve
B.Close all overflow valves
C.Place 5 gallon containers under all flange connections in the fuel line
D.Reduce the pumping rate and sound tanks frequently as the level rises

最新試題

() is not installed on the main switchboar.

題型:?jiǎn)雾?xiàng)選擇題

Which one is NOT the ‘clear grounds’ for a more detailed inspection?()

題型:?jiǎn)雾?xiàng)選擇題

During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

題型:?jiǎn)雾?xiàng)選擇題

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

題型:?jiǎn)雾?xiàng)選擇題

Which of the diesel engine components listed increase air density and helps to improve engine operating efficiency?()

題型:?jiǎn)雾?xiàng)選擇題

The condensers located in various stages of a flash evaporator are cooled by()

題型:?jiǎn)雾?xiàng)選擇題

The flash point of a residual fuel oil should be used to determine the highest temperature to which oil may be heated()

題型:?jiǎn)雾?xiàng)選擇題

To proceed to the assistance of a ship in distress is()

題型:?jiǎn)雾?xiàng)選擇題

()are used to digest the sewage to produce innocuous sludge in a biological sewage treatment plant.

題型:?jiǎn)雾?xiàng)選擇題

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

題型:?jiǎn)雾?xiàng)選擇題