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单选题
How is the annual rate of change for magnetic variation shown on a pilot chart?（）
A
Gray lines on the uppermost inset chart
B
Red lines on the main body of the chart
C
In parenthesis on the lines of equal magnetic variation
D
Annual rate of change is not shown
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The annual change in______is －0.2 degree east in this water area.A.mean high waterB.marine insuranceC.magnetic variationD.maritime accident
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The agonic line on an isomagnetic chart indicates the ______.A.magnetic equatorB.magnetic longitude reference lineC.points where there is no variationD.points where there is no annual change in variation
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The compass rose on a nautical chart indicates both variation and ______.A.deviationB.annual rate of variation changeC.precessionD.compass error
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Lines on a chart which connect points of equal magnetic variation are called ______.A.magnetic latitudesB.magnetic declinationsC.dipD.isogonic lines
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How is the annual rate of change for magnetic variation shown on a pilot chart? ______.A.Gray lines on the uppermost inset chartB.Red lines on the main body of the chartC.In parenthesis on the lines of equal magnetic variationD.Annual rate of change is not shown
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The annual change in ______ is 0.2 degree．A.Magnetic VariationB.Marine InsuranceC.Maritime AccidentD.Mean High Water Spring
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Compass error is equal to the ______.A.deviation minus variationB.variation plus compass courseC.combined variation and deviationD.difference between true and magnetic heading
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How is variation indicated on a small-scale nautical chart?______.A.Magnetic compass tableB.Magnetic meridiansC.Isogonic linesD.Variation is not indicated on small-scale nautical charts
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If a magnetic compass is not affected by any magnetic field other than the Earth’s which statement is TRUE?______.A.Compass error and variation are equalB.Compass north will be true northC.Variation will equal deviationD.There will be no compass error
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单选题As his moviemaking career began to wane, Jerry Lewis remained in the public eye by hosting both a variety show and on an annual telethon with benefits for the Muscular Dystrophy Association.A
on an annual telethon with benefits for the Muscular Dystrophy AssociationB
an annual telethon with benefits to the Muscular Dystrophy AssociationC
benefiting the Muscular Dystrophy Association with his annual telethonD
an annual telethon benefiting the Muscular Dystrophy AssociationE
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考题
单选题The agonic line on an isomagnetic chart indicates the （）.A
magnetic equatorB
magnetic longitude reference lineC
points where there is no variationD
points where there is no annual change in variation
考题
单选题If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE? （）A
Compass error and variation are equalB
Compass north will be true northC
Variation will equal deviationD
There will be no compass error
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单选题Variation is not constant; it is different with every change in（）.A
speedB
vessel headingC
geographical locationD
cargo
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单选题Lines on a chart which connect points of equal magnetic variation are called （）.A
magnetic latitudesB
magnetic declinationsC
dipD
isogonic lines
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单选题Magnetic variation changes with a change in（）.A
the vessel's headingB
sea conditionsC
seasonsD
the vessel's position
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单选题How does a vessel’s rate of turn change when entering shallow water?（）A
It is fasterB
It is slowerC
There is no changeD
It remains constant for varying propeller revolutions
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单选题The permanent magnetism of a vessel may change in polarity due to（）.A
being moored for a long time on one headingB
being struck by lightingC
steaming from the north magnetic hemisphere to the south magnetic hemisphereD
loading a homogenous magnetic cargo such as steel plate，iron bars，etc
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单选题Which information does the outer ring of a compass rose on a nautical chart provide（）.A
variationB
true directionsC
magnetic directionsD
annual rate of variation change
考题
单选题The compass rose on a nautical chart indicates both variation and （）.A
deviationB
annual rate of variation changeC
precessionD
compass error
考题
单选题Variation is the angular measurement between（）.A
compass north and magnetic northB
compass north and true northC
magnetic meridian and the geographic meridianD
your vessel's heading and the magnetic meridian
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单选题Variation in a compass is caused by（）.A
worn gears in the compass housingB
magnetism from the earth's magnetic fieldC
magnetism within the vesselD
lack of oil in the compass bearings
考题
单选题According to the passage, _____.A
we should not worry about the transition of the Earth’s magnetic fieldB
the Earth’s magnetic field will not change for at least 2000 yearsC
the Earth’s magnetic field has decreased its strength rapidlyD
the transition of the Earth’s magnetic field can be controlled by modern science
考题
单选题The principal purpose of magnetic compass adjustment is to（）.A
reduce the variation as much as possibleB
reduce the deviation as much as possibleC
reduce the magnetic dip as much as possibleD
allow the compass bowl to swing freely on its gimbals
考题
单选题Compass error is equal to the（）.A
deviation minus variationB
variation plus compass courseC
combined variation and deviationD
difference between true and magnetic heading
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