A.The ventilators will automatically close by the action of fusible links
B.The motor takes its air supply from outside the lifeboat to prevent asphyxiation of the crew
C.A water spray system to cool the outside of the boat is operated by a high-volume manual pump
D.An air tank will provide about ten minutes of air for the survivors and the engine
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A.oil
B.rig
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Normally，potable water systems are connected directly to the（）.
Fire fighting equipment requirements for a particular vessel may be found on the（）.
How should the lifeboat sea painter be rigged?（）
Safe water buoys may show ONLY（）.
In addition to the life jackets stowed at each berth location，life jackets must be stowed at each watch station and（）.
On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）
On a vessel making a voyage more than 48 hours long，regulations require that（）.
Each lifeboat must be lowered and maneuvered in the water at least once every（）.
On a ship，a fixed carbon dioxide or other approved system must be installed（）.
On a ship，a cabinet or space containing the controls or valves for the fixed firefighting system must be（）.