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单选题
The magnetism in the various structures of a ship changing as a result of cruising,vibration,or aging is termed().
A
permanent magnetism
B
subpermanent magnetism
C
induced magnetism
D
variable magnetism
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In the navigation,_______cause the shafting over load most easilyA.stopping the main engine suddenlyB.changing the main engine running direction suddenlyC.the sailing from the shallow water area to the deep water areaD.the ship's trim too much
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Permanent magnetism is caused by ______.A.operation of electrical equipment and generators on board shipB.the earth's magnetic field affecting the ship's hard iron during constructionC.the horizontal component of the earth's magnetic field acting on the horizontal soft ironD.the vertical component of the earth's magnetic field acting on the vertical soft iron
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A ship under construction or major repair will acquire permanent magnetism due to ______ while sitting stationary in the earth's magnetic field.A.hammering and jarringB.vibration and poundingC.varying magnetic fieldsD.stable or permanent magnetism of the ship
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The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval ________.A.They are not subject to permanent magnetism; no check is necessaryB.SemiannuallyC.AnnuallyD.Every five years
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______ is not contained in the muster list.A.the details of how the order to abandon ship is givenB.the details of the general emergency alarm signal,the fire alarm signal and the public address systemC.the substitutes for key persons who may become disabledD.the various fire sections enclosed by“A”class divisions
考题
If a ship is proceeding towards the magnetic equator, the uncorrected deviation due to permanent magnetism ______.A.increasesB.remains the sameC.decreasesD.is unimportant and may be neglected
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If the vertical center of gravity (VCG) of a ship rises 1.7 feet, the righting arm (GZ) for the various angles of inclination will ______.A.decreaseB.increaseC.remain unchangedD.be changed by the amount of GG’ x cosine of the angle
考题
Magnetism which is present only when the material is under the influence of an external field is called ______.A.permanent magnetismB.induced magnetismC.residual magnetismD.terrestrial magnetism
考题
单选题In the navigation() cause the shafting over load easily.A
the stopping engine suddenlyB
the sailing astern and changing direction suddenlyC
the sailing from the shallow water area to the deep water areaD
the ship’s trim too much
考题
单选题()of my ship’s propeller is very strong.A
The running reflectionB
The turning effectC
The moving speedD
The changing sensibility
考题
单选题If a ship is proceeding towards the magnetic equator,the uncorrected deviation due to permanent magnetism().A
increasesB
remains the sameC
decreasesD
is unimportant and may be neglected
考题
单选题On a semisubmersible ship,reserve buoyancy is increased by the presence of void spaces above the waterline in the().A
submerged hullsB
quartersC
columns and upper structureD
submerged connecting structures
考题
单选题Floors aboard ship are().A
also called decksB
vertical transverse plates connecting the vertical keel with the margin platesC
large beams fitted in various parts of the vessel for additional strengthD
found in passenger and berthing spaces only
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单选题This induced magnetism()the permanent magnetism already present in the ship.A
will add toB
will subtract fromC
may add to or subtract fromD
will not change
考题
单选题The procedure of strengthening damaged structures on a ship by using wood or steel is called().A
bracingB
batteningC
blockingD
shoring
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单选题Repair of structures on a ship in the vicinity of liquid mud handling areas presents what possible hazard?()A
Toxic gasses may be presentB
Flammable gasses may be presentC
Liquid muds may flood adjoining spacesD
An oxygen-deficient atmosphere may be present
考题
单选题Your ship is steaming at night with the gyropilot engaged. You notice that the vessel’s course is slowly changing to the right. Which action should you take FIRST?().A
Notify the engine room of the steering malfunctionB
Change to hand steeringC
Call the MasterD
Send the Quartermaster to the emergency steering station
考题
单选题If the vertical center of gravity (VCG) of a ship rises 1.7 feet,the righting arm (GZ) for the various angles of inclination will().A
decreaseB
increaseC
remain unchangedD
be changed by the amount of GG' x cosine of the angle
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单选题In the voyage, when carrying out abandon ship drill () should be test every time.A
the emergency lighting system for muster and abandon shipB
air oil emergency shut-downC
ME emergency operationD
main auxiliary steering gear changing
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单选题According to the regulation of the voyage trial on new ship,()is one of the trial items of the UMS ship bridge control.A
starting and direction changing trialB
cancelling accelerating function trialC
lowest stable speed trialD
continuous running trial
考题
单选题The Flinders bar on a magnetic compass compensates for the().A
induced magnetism in vertical soft ironB
induced magnetism in horizontal soft ironC
permanent magnetism in ship's steelD
vessel's inclination from the vertical
考题
单选题The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval().A
They are not subject to permanent magnetism; no check is necessaryB
SemiannuallyC
AnnuallyD
Every five years
考题
单选题Permanent magnetism is caused by().A
operation of electrical equipment and generators on board shipB
the earth's magnetic field affecting the ship's hard iron during constructionC
the horizontal component of the earth's magnetic field acting on the horizontal soft ironD
the vertical component of the earth's magnetic field acting on the vertical soft iron
考题
单选题A ship under construction or major repair will acquire permanent magnetism due to()while sitting stationary in the earth’s magnetic field.A
hammering and jarringB
vibration and poundingC
varying magnetic fieldsD
stable or permanent magnetism of the ship
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