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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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单选题Vessels having main engines arranged for air starting are to be provided with at least （）A
one automatic drain serving both containersB
two air starting containers of approximately equal sizeC
one control air container and one starting air containerD
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考题
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sheath-screw davitB
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单选题In order to find out which lifeboat you are assigned, you should look at the （）.A
Certificate of InspectionB
Station BillC
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单选题Frapping lines are fitted to lifeboat davits to（）.A
secure the lifeboat in the davits when in the stowed positionB
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reduce the swinging of the lifeboat at the embarkation level
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单选题Air receivers installed in starting air systems are to be （）.A
cylindrical in shape with service connections located at the top and bottomB
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单选题Frapping lines are fitted to lifeboat davits to（）.A
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
be used as a safety line in an emergency
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单选题The piston cooling system may employ similar components, except that a drain tank is used instead of a head tank That means this system （）.A
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uses a drain tank not head tankC
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单选题After a normal, or safety shutdown, automatic combustion control systems for an auxiliary boiler are designed to prevent the immediate refiring of a burner in order for the （）.A
furnace to be re-purgedB
electric charge to buildup in the igniterC
fuel pump to restartD
dram level to stabilize
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单选题When received the order "finished with engine" which of the following operations is wrong?（）A
stop the LO pump, SW pump, FW pumpB
stop the priming FO transfer pumpC
engage the turning gearD
open the scavenge air belts drain valve and cover the turbocharger silencer with the dustproof cover
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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
check for cracks in the hullC
shift all personnel to the sternD
check the bilge drain plug
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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
考题
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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