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
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 jarring
B.vibration and pounding
C.varying magnetic fields
D.stable or permanent magnetism of the ship
相关考题：
______ is issued under the provision of International Convention for the Prevention of Pollution from Ships，1973，as modified by the Protocol of 1978 relating thereto.A.INTERNATIONAL OIL POLLUTION PREVENTION CERTIFICATEB.CARGO SHIP SAFETY CONSTRUCTION CERTIFICATEC.CARGO SHIP SAFETY EQUIPMENT CERTIFICATED.CARGO SHIP SAFETY RADIOTELEPHONY CERTIFICATE
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
Permanent magnetism is found in ______.A.hard ironB.soft ironC.vertical iron onlyD.horizontal iron only
A claim for cargo damages may be held against the shipowner if such damage is the result of failure of the ship's officers to ______.A.ensure the fitness and safety of cargo spacesB.ensure adequate packaging of the cargoC.prevent delays due to quarantine restrictionsD.correct all defects in the ship's construction
The permanent magnetism of a vessel may change in strength due to ______.A.the nature of the cargo being carriedB.changes in headingC.major structural repairD.All of the above
What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude ________．A.Flinders barB.Soft iron spheresC.Fore-and-aft permanent magnets in their traysD.Heeling magnet
The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed ______．A.permanent magnetismB.subpermanent magnetismC.induced magnetismD.variable magnetism
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
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
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
单选题If a ship is proceeding towards the magnetic equator，the uncorrected deviation due to permanent magnetism（）.AincreasesBremains the sameCdecreasesDis unimportant and may be neglected
单选题What is used to correct for both induced and permanent magnetism，and consequently must be readjusted with radical changes in latitude（）.AFlinders barBSoft iron spheresCFore-and-aft permanent magnets in their traysDHeeling magnet
单选题This induced magnetism（）the permanent magnetism already present in the ship.Awill add toBwill subtract fromCmay add to or subtract fromDwill not change
单选题The permanent magnetism of a vessel may change in polarity due to（）.Abeing moored for a long time on one headingBbeing struck by lightingCsteaming from the north magnetic hemisphere to the south magnetic hemisphereDloading a homogenous magnetic cargo such as steel plate，iron bars，etc
单选题The magnetism in the various structures of a ship changing as a result of cruising，vibration，or aging is termed（）.Apermanent magnetismBsubpermanent magnetismCinduced magnetismDvariable magnetism
单选题The permanent magnetism of a vessel may change in strength due to（）.Aa collision with another vesselBbeing moored on a constant heading for a long period of timeCbeing struck by lightningDAll of the above
单选题（）is issued under the provision of International Convention for the Prevention of Pollution from Ships，1973，as modified by the Protocol of 1978 relating thereto.AINTERNATIONAL OIL POLLUTION PREVENTION CERTIFICATEBCARGO SHIP SAFETY CONSTRUCTION CERTIFICATECCARGO SHIP SAFETY EQUIPMENT CERTIFICATEDCARGO SHIP SAFETY RADIOTELEPHONY CERTIFICATE
单选题The Flinders bar on a magnetic compass compensates for the（）.Ainduced magnetism in vertical soft ironBinduced magnetism in horizontal soft ironCpermanent magnetism in ship's steelDvessel's inclination from the vertical
单选题The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval（）.AThey are not subject to permanent magnetism; no check is necessaryBSemiannuallyCAnnuallyDEvery five years
单选题The permanent magnetism of a vessel may change in strength due to（）.Athe nature of the cargo being carriedBchanges in headingCmajor structural repairDAll of the above
单选题Permanent magnetism is caused by（）.Aoperation of electrical equipment and generators on board shipBthe earth's magnetic field affecting the ship's hard iron during constructionCthe horizontal component of the earth's magnetic field acting on the horizontal soft ironDthe vertical component of the earth's magnetic field acting on the vertical soft iron
单选题Permanent magnetism is found in（）.Ahard ironBsoft ironCvertical iron onlyDhorizontal iron only
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.Ahammering and jarringBvibration and poundingCvarying magnetic fieldsDstable or permanent magnetism of the ship
单选题A claim for cargo damages may be held against the shipowner if such damage is the result of failure of the ship’s officers to（）.Aensure the fitness and safety of cargo spacesBensure adequate packaging of the cargoCprevent delays due to quarantine restrictionsDcorrect all defects in the ship's construction
单选题A single vertical magnet placed underneath the compass in the binnacle is used to compensate for（）.Athe horizontal component of the permanent magnetismBdeviation caused by the vessel's inclination from the verticalCinduced magnetism in the horizontal soft ironDinduced magnetism in the vertical soft iron
单选题A simplified construction plan may be included in the ship construction portfolio provided it adequately defines the（）.Aareas where special materials are usedBhazardous areasClocation of emergency repair equipmentDtype and strength of materials used
单选题In ship construction，frame spacing is（）.Agreater at the bow and sternBreduced at the bow and sternCuniform over the length of the vesselDuniform over the length of the vessel，with the exception of the machinery spaces，where it is reduced due to increased stresses