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单选题
（）water is the water in the hold to keep the ship’s stability.
A
Bilge
B
Ballast
C
Slop
D
Sanitary
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______is the number of millimeters by which the mean draft changes when a ship passes from salt water to fresh water，or vice versa，whilst floating at the loaded draft．A.TPCB.The Fresh Water AllowanceC.Parallel sinking of the shipD.UKC
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两节入水。（）A、Put two shackles into water.B、Two shackles in water.C、Keep two shackles in water.D、All A、B and C are correct.
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单选题In the navigation, cause the shafting over load most easily（）A
stopping the main engine suddenlyB
changing the main engine running direction suddenlyC
the sailing from the shallow water area to the deep water areaD
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单选题（）is applied to the area of the ship’s hull which is out of water when the ship is loaded.A
Boottopping paintB
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speed of advanceC
wake distributionD
wake fraction
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单选题Wood or steel hatch covers are made（）by tarpaulins.A
watertightB
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so strong that no water will come into the hold
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depth of water at a specific time due to tidal effectB
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difference between the depth of the water at high tide and the depth of the water at low tide
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单选题If the coxswain of your lifeboat gives the command HOLD WATER you should（）.A
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lift the oar in a vertical positionC
complete the stroke and hold the oar out of the waterD
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单选题When a ship in loaded condition floats at arbitrary water line, its displacement is to the relevant mass of water displaced by the ship（）A
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单选题When the density of water is 1000,i.e.in fresh water and in summer zone a ship may load to the upper edge of the line marked（）.A
SB
TC
WD
F
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单选题When is the density of the water required to be logged in the logbook of a ship?（）A
Any time the vessel moves from water of one density into waters of a different densityB
Prior to getting underway when the vessel is floating in fresh or brackish waterC
Only when the vessel moves from fresh water into salt waterD
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单选题To keep injured survivors warm in the water after abandoning a ship，they should（）.A
be placed in the middle of a small circle formed by the other survivors in the waterB
float on their backs with their arms extended for maximum exposure to the airC
remove their life preservers and hold on to the uninjured survivorsD
sip seawater at intervals of fifteen minutes
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单选题If you see someone fall overboard from a ship，you should（）.A
immediately jump in the water to help the individualB
call for help and keep the individual in sightC
run to the radio room to send an emergency messageD
go to the control room for the distress flares
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