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单选题
Deballasting a double bottom has what affect on KG?（）.
A
KG is increased
B
KG is decreased
C
KG is not affected
D
KG increases at light drafts and decreases at deep drafts
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if the anchor has been heaved out of the ground and clear of the bottom, what do you report?
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A term applied to the bottom shell plating in a double-bottom ship is ______．A.bottom floorB.outer bottomC.shear platingD.tank top
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Floors aboard ship are ______．A.frames to which the tank top and bottom shell are fastened on a double bottomed shipB.transverse members of the ships frame which support the decksC.longitudinal beams in the extreme bottom of a ship from which the ship's ribs startD.longitudinal angle bars fastened to a surface for strength
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The hull is divided up into a number of watertight compartments by ______．A.inner bottom plating and longitudinalsB.decks and bulkheadsC.double bottom girdersD.topside and hopper tank sloping plating and longitudinals
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Deballasting a double bottom has what affect on KG? ______.A.KG is increasedB.KG is decreasedC.KG is not affectedD.KG increases at light drafts and decreases at deep drafts
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What would you say to the hotel receptionist to get a double room?__________
A．Rent us a double room.
B．Book us a double room.
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水泥涂料用于淡水舱和双层底舱。（）A、Primer is used for sea water tanks and double bottom tanks.B、Cement wash is used for fresh water tanks and double bottom tanks.C、Varnish is used for fresh water tanks and double bottom tanks.D、Bitumen is used for fresh water tanks and double bottom tanks.
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单选题In a commonly used fuel oil system, the oil is stored in tanks in the double bottom from which it is pumped to （） and heated.A
a service tankB
a settling tankC
an expansion tankD
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考题
单选题To improve your vessel’s stabilty in a hazardous situation, you should（）.A
ballast deep tanks if they are slackB
transfer ballast athwarshipsC
pump out double bottomsD
fill double bottom from deep tanks
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单选题Your vessel is damaged，listing to port and on occasion flopping to the same angle to starboard. It has a long，slow，sluggish roll around the angle of list. There is excessive trim by the stern with little freeboard aft. What action should you take?（）.A
Jettison any off-center topside weights to lower GM and correct the listB
Pump out any slack after double-bottom tanks to reduce free surface and increase freeboard aftC
Pump out the after peak and fill the forepeak to change the trimD
Press up any slack double-bottom tanks forward of the tipping center，then fill the forepeak if empty
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单选题Your vessel is damaged and listing to port. There is a short rolling period around the angle of list. The portside freeboard is reduced to 1 foot. There is no trim and the weather is calm. You should FIRST（）.A
press up a slack double bottom tank on the port sideB
fill an empty centerline double bottom tankC
pump out a slack marine portable tank located on the portside amidshipsD
jettison the anchors and anchor cables
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单选题Your vessel is damaged and is listing to port. The rolling period is short. There is sufficient freeboard so that deck edge submersion is not a problem. What corrective action should be taken FIRST in regard to the vessel’s stability?（）.A
Press up any slack double-bottom tanks to eliminate free surfaceB
Flood any empty double-bottom tanks to add weight low and downC
Jettison topside weights to reduce KG and KBD
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单选题Floors aboard ship are（）.A
frames to which the tank top and bottom shell are fastened on a double bottomed shipB
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frames to which the tank top and bottom shell are fastened on a double bottomed shipB
transverse members of the ships frame which support the decksC
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longitudinal angle bars fastened to a surface for strength
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单选题If your vessel has a list to port due to negative GM and off-center weight，the first corrective measure you should take is to（）.A
move port-side main-deck cargo to the starboard sideB
fill the starboard double-bottomC
pump water from the port double-bottom to the starboard double-bottomD
pump water from the port double-bottom over the side
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单选题Your vessel is listing 4° to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by the head with one foot of freeboard at the bow. Which action should you take FIRST?（）A
Press up the slack NO.1 starboard double bottom tankB
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Rent us a double room.B
Book us a double room.C
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单选题What is meant by the term two-blocked（）.A
The bottom block touches the top blockB
The line has jumped the sheavesC
There are turns in the fallD
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单选题Initial stability of a vessel may be improved by（）.A
removing loose waterB
adding weight low in the vesselC
closing crossover valves between partly filled double bottom tanksD
All of the above
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单选题A term applied to the bottom shell plating in a double-bottom ship is（）.A
bottom floorB
outer bottomC
shear platingD
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单选题Such an engine frame helps （） the engine and so protect the bearings from the deformation forces transmitted via the ships double bottom.A
to stiffenB
to softenC
to loosenD
to wear
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单选题In a typical fuel system, the oil is stored in （） in the double bottom.A
setting tanksB
service tanksC
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单选题（） is secured by means of side-chock bolts and end-chock bolts.A
The bedplateB
The columnC
The main bearingD
The double bottom
考题
单选题Deballasting a double bottom has what affect on KG（）.A
KG is increasedB
KG is decreasedC
Kgis not affectedD
KG increases at light drafts and decrease at deep drafts
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单选题Your vessel is listening 4°to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by th end with one foot of freeboard at the bow. Which action should you take first?（）A
Press up the slack No.1 starboard double bottom tankB
Pump out the forepeak tankC
Eliminate the water in the tween decks aftD
Jettision stores out of the paint locker in the focsle
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