單項(xiàng)選擇題There is a fire aft aboard your vessel. To help fight the fire，you should（）.

A.put the wind off either beam
B.head the bow into the wind and decrease speed
C.put the stern into the wind and increase speed
D.put the stern into the wind and decrease speed


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1.單項(xiàng)選擇題There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.

A.the lack of cooling effect on heated materials
B.that it cannot be used in a dead ship situation with no electrical power to the CO2 pump
C.that it breaks down under extreme heat to form poisonous gases
D.there is no effect on a class A fire even in an enclosed space

2.單項(xiàng)選擇題The wooden plug inserted in the vent of a damaged tank of a ship should be removed in case it is decided to（）.

A.pump from the damaged tank
B.fight a fire
C.abandon the rig
D.use the crossover system

3.單項(xiàng)選擇題The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?（）

A.A fusible link will automatically open after a fire is extinguished and reset the damper
B.Fusible links must be replaced at every inspection for certification
C.Fusible links are tested by applying a source of heat to them
D.Fusible links must be replaced if a damper is activated

4.單項(xiàng)選擇題The type of extinguisher which should be used for an electricity fire is（）.

A.foam or soda acid
B.dry chemical or foam
C.carbon dioxide or dry chemical
D.carbon dioxide or foam

5.單項(xiàng)選擇題The supply of carbon dioxide used in the fixed extinguishing system aboard a cargo vessel MUST be at least sufficient for（）.

A.all the spaces of a vessel
B.all cargo spaces
C.the engine room and largest cargo space
D.the space requiring the largest amount