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Deviation is the angle between the ______.
A.true meridian and the axis of the compass card
B.true meridian and the magnetic meridian
C.magnetic meridian and the axis of the compass card
D.axis of the compass card and the degaussing meridian
参考答案
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The compass error of a magnetic compass that has no deviation is ______.A.zeroB.equal to variationC.eliminated by adjusting the compassD.constant at any geographical location
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The distance between any two meridians measured along a parallel of latitude and expressed in miles is the ______.A.difference in longitudeB.mid-longitudeC.departureD.meridian angle
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When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to ______.A.the meridian through the object of the bearingB.the meridian through the ship's positionC.the meridian midway between the ship and the objectD.any meridian
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On a nautical chart，the inner ring of a compass rose indicates ______.A.true directionsB.compass errorC.deviationD.magnetic directions
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When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results ______.A.in the vessel's Official LogbookB.on the compass deviation cardC.in the compass deviation logD.on a Napier diagram
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In the navigational triangle，the angle at the elevated pole is the ______．A.meridian angleB.altitudeC.right ascensionD.azimuth angle
考题
Deviation which is maximum on intercardinal compass headings may be removed by the ______．A.Flinders barB.Transverse magnetsC.Fore-and-aft magnetsD.Soft iron spheres on the sides of the compass
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Compass deviation is caused by ______.A.magnetism from the earth’s magnetic fieldB.misalignment of the compassC.magnetism within the vesselD.a dirty compass housing
考题
Compass error is equal to the ______.A.deviation minus variationB.variation plus compass courseC.combined variation and deviationD.difference between true and magnetic heading
考题
If the compass heading and magnetic-heading are the same then ______.A.the deviation has been offset by the variationB.there is something wrong with the compassC.the compass is being influenced by nearby metalsD.there is no deviation on that heading
考题
Magnetic compass deviation______．A.varies depending upon the bearing usedB.is the angular difference between magnetic north and compass northC.is published on the compass rose on most nautical chartsD.is the angular difference between geographic and magnetic meridians
考题
Magnetic heading differs from compass heading by______．A.compass errorB.true headingC.variationD.Deviation
考题
Magnetic dip is a measurement of the angle between the ______.A.geographic pole and the magnetic poleB.lubber’s line and true northC.horizontal and the magnetic line of forceD.compass heading and the magnetic heading
考题
单选题Compass deviation is caused by（）.A
magnetism from the earth's magnetic fieldB
misalignment of the compassC
magnetism within the vesselD
a dirty compass housing
考题
单选题The compass deviation changes as the vessel changes（）.A
geographical positionB
speedC
headingD
longitude
考题
单选题Deviation is the angle between the（）.A
true meridian and the axis of the compass cardB
true meridian and the magnetic meridianC
magnetic meridian and the axis of the compass cardD
axis of the compass card and the degaussing meridian
考题
单选题The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is（）.A
deviationB
variationC
compass errorD
dip
考题
单选题As a vessel changes course to starboard，the compass card in a magnetic compass（）.A
remains aligned with compass northB
also turns to starboardC
first turns to starboard then counterclockwise to portD
turns counterclockwise to port
考题
单选题If the magnetic heading is greater than the compass heading，the deviation is（）.A
eastB
westC
northD
south
考题
单选题If the compass heading and the magnetic heading are the same then（）.A
the deviation has been offset by the variationB
there is something wrong with the compassC
the compass is being influenced by nearby metalsD
there is no deviation on that heading
考题
单选题When using a Lambert conformal chart in high latitudes，angles such as bearings are measured in reference to （）.A
the meridian through the object of the bearingB
the meridian through the ship's positionC
the meridian midway between the ship and the objectD
any meridian
考题
单选题（）is the distance east or west measured in degrees，minutes and seconds of arc on the equator between the prime meridian and the meridian passing through the place.A
LongitudeB
LatitudeC
HeightD
Bearing
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The angle at the pole measured through 180°from the prime meridian to the meridian of a point is known as（）.A
the departureB
the polar arcC
longitudeD
Greenwich hour angle
考题
单选题The quadrantal spheres are used to（）.A
Remove deviation on the intercardinal headingsB
Remove deviation on the cardinal compass headingsC
Remove heeling errorD
Compensate for induced magnetism in vertical soft iron
考题
单选题The compass error of a magnetic compass that has no deviation is（）.A
zeroB
equal to variationC
eliminated by adjusting the compassD
constant at any geographical location
考题
单选题Magnetic compass deviation（）.A
varies depending upon the bearing usedB
is the angular difference between magnetic north and compass northC
is published on the compass rose on most nautical chartsD
is the angular difference between geographic and magnetic meridians
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