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单选题
The double bottom in a vessel is a space comprised of （）
A
plating forming the engine room tank top
B
doubler plating installed over the flat keel plate
C
a watertight boundary formed by the inner bottom
D
compartments between the inner and outer bottoms
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考题
Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white?A.A vessel engaged in diving operationsB.A pilot vesselC.A vessel trawlingD.All of the above
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A vessel would be referred to as "stiff" when the weight of the cargo is ______.A.evenly distributed vertically and the double bottoms are fullB.concentrated low and the double bottoms are emptyC.concentrated low and the double bottoms are fullD.concentrated high and the double bottoms are empty
考题
A term applied to the bottom shell plating in a double-bottom ship is ______．A.bottom floorB.outer bottomC.shear platingD.tank top
考题
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
考题
A half-height container is used ______.A.to carry cargos of low densityB.when stowage space is limitedC.to carry cargos such as steel products or drumsD.to double the stowage capacity of the vessel
考题
从水面到甲板之间的高度称之为干舷。（）A、The height from the bottom of a vessel to the weather deck is called freeboard.B、The depth from water level to the bottom of a vessel is called freeboard.C、The length from the bow to stern of a vessel is called freeboard.D、The height from water level to the main deck is called freeboard.
考题
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.
考题
单选题（）of the following conditions will cause a vessel’s bottom to be subjected to tension stresses.A
Concentration of weight aftB
Concentration of weight forwardC
Concentration of weight amidshipsD
Concentration of weight at both ends of the vessel
考题
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
a double bottom tank
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
考题
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
考题
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
考题
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
Shift any off-center weights from port to starboard
考题
单选题A half-height container is used（）.A
to carry cargoes of low densityB
when stowage space is limitedC
to carry cargoes such as steel products or drumsD
to double the stowage capacity of the vessel
考题
单选题Which vessel may show three lights in a vertical line，the top and bottom being red and the middle being white? （）A
A vessel engaged in diving operationsB
A pilot vesselC
A vessel trawlingD
All of the above
考题
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
考题
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
Pump out the forepeak tankC
Eliminate the water in the 'tween decks aft
考题
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
考题
单选题The inner bottom is the（）.A
tank topB
compartment between the tank top and shell of the vesselC
inner side of the vessel's shellD
space between two transverse bottom frames
考题
单选题A term applied to the bottom shell plating in a double-bottom ship is（）.A
bottom floorB
outer bottomC
shear platingD
tank top
考题
单选题A vessel would be referred to as tender when the weight of the cargo is（）.A
evenly distributed vertically and the double bottoms are fullB
concentrated low and the double bottoms are emptyC
concentrated low and the double bottoms are fullD
concentrated high and the double bottoms are empty
考题
单选题The clearance volume for a single stage compressor is defined as the space created between the （）.A
top of the piston and bottom side of head, with the piston at BDCB
piston and head, including the space around the piston to the top of the upper ring and under the valves, with the piston at TDCC
bottom of the piston and bottom side of the head at TDC, regardless of upper ring location and valve placementD
top of the piston and bottom side of the head at TDC as compared to that which exists between the top of the piston and bottom side of head at BDC
考题
单选题A vessel is tender if cargo weight is（）.A
concentrated high and the double bottoms emptyB
concentrated low and the double bottoms emptyC
evenly distributed vertically with the double bottoms fullD
concentrated and with the double bottoms full
考题
单选题The best method to stop a vessel from dragging anchor in a sand bottom is to（）.A
reduce the length of the cableB
pay out more anchor cableC
back the enginesD
swing the rudder several times to work the anchor into the bottom
考题
单选题In a typical fuel system, the oil is stored in （） in the double bottom.A
setting tanksB
service tanksC
tanksD
drain tanks
考题
单选题从水面到甲板之间的高度称之为干舷。（）A
The height from the bottom of a vessel to the weather deck is called freeboard.B
The depth from water level to the bottom of a vessel is called freeboard.C
The length from the bow to stern of a vessel is called freeboard.D
The height from water level to the main deck is called freeboard.
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