單項(xiàng)選擇題Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?()

A.Carbon dioxide is corrosive when exposed to fire
B.Carbon dioxide should be applied slowly to a large engine room fire
C.Its total cooling effect is far greater than water
D.Its smothering effect is excellent for class B fires


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If fuel is burned from only the starboard tanks, the ship will ().

A.go down by the head
B.list to starboard
C.trim by the stem
D.list to port

2.單項(xiàng)選擇題In cleaning up an oil spill, the use of chemical agents would ().

A.absorb the oil for easy removal
B.remove the oil from the water
C.disperse or dissolve the oil in the water
D.not affect the oil

3.單項(xiàng)選擇題Why is it necessary to warn engine room personnel before activating the fixed CO2 system?()

A.To make them aware there is a fire
B.To let them know they should leave the engine room
C.To prevent possible injury from frostbite
D.To make them aware that ventilation will automatically stop

5.單項(xiàng)選擇題An example of class "A" fire is a/an ().

A.electrical fire in the engine room
B.oil fire in the engine room bilges
C.oil fire involving a grade "A" petroleum product
D.mattress fire in a stateroom

最新試題

The Port State Control officer may witness a fire drill carried out by the crew assigned to these duties on the()

題型:?jiǎn)雾?xiàng)選擇題

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

題型:?jiǎn)雾?xiàng)選擇題

To shut down a diesel engine after it exceeds the set maximum speed,which type of device listed should be used?()

題型:?jiǎn)雾?xiàng)選擇題

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()

題型:?jiǎn)雾?xiàng)選擇題

The additional mark ()in the Classification Certificate for Machinery means propulsion apparatus is remotely controlled on the navigating bridge control station, and engine assembly control station is unmanned periodically.

題型:?jiǎn)雾?xiàng)選擇題

()connectors hold best if a wire is accidentally pulled or a connection becomes loose.

題型:?jiǎn)雾?xiàng)選擇題

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to ()

題型:?jiǎn)雾?xiàng)選擇題

Under MARPOL Code the ship to which it applies has to carry ()

題型:?jiǎn)雾?xiàng)選擇題

“Insufficiency of manning or insufficiency of certification of seafarers” is an identification of a()

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