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单选题
In order for the automatic lifeboat drain to operate properly（）.
A
the cap should be removed to drain the boat when it is waterborne
B
the cage must be free of rubbish or the ball may not seat properly
C
there is an automatic ball check located in a siphon tube
D
the small lever to release the rubber ball float must be turned counterclockwise
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更多 “单选题In order for the automatic lifeboat drain to operate properly（）.A the cap should be removed to drain the boat when it is waterborneB the cage must be free of rubbish or the ball may not seat properlyC there is an automatic ball check located in a siphon tubeD the small lever to release the rubber ball float must be turned counterclockwise” 相关考题
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two air starting containers of approximately equal sizeC
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reduce the swinging of the lifeboat as it is being lowered from the embarkation levelB
secure the lifeboat in the davits when in the stowed positionC
hold the lifeboat to the ship's side until the tricing lines are passedD
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单选题If water is rising in the bilge of a lifeboat，you should FIRST（）.A
abandon the survival craftB
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shift all personnel to the sternD
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单选题After launching，an inflatable raft should be kept dry inside by（）.A
opening the automatic drain plugsB
draining the water pocketsC
using the electric bilge pumpD
using the bailers and cellulose sponge
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单选题What is TRUE of pressure/vacuum valves? （）A
They are designed to provide for the flow of small volumes of tank atmospheres caused by thermal variations in a cargo tankB
They should operate in advance of the pressure/vacuum breakersC
They should be kept in good working order by regular inspection and cleaningD
All of the above
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