单选题compass（）A舵角指示器B舵机C吃水指示器D罗经
单选题
compass（）
A
舵角指示器
B
舵机
C
吃水指示器
D
罗经
参考解析
解析：
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相关考题：
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
Which one of the followings is incorrect about magnetic compass?______.A.The magentic compass is compulsory on my vesselB.The magentic compass is prone to errorC.The magentic compass is always placed inside steel constructionsD.The magentic compass needs to be calibrated to compensate for local magnetic distortion
The compass rose on a nautical chart indicates both variation and ______.A.deviationB.annual rate of variation changeC.precessionD.compass error
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
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
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
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
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
Magnetic heading differs from compass heading by______．A.compass errorB.true headingC.variationD.Deviation
单选题Compass deviation is caused by（）.Amagnetism from the earth's magnetic fieldBmisalignment of the compassCmagnetism within the vesselDa dirty compass housing
单选题If a magnetic compass is not affected by any magnetic field other than the Earth’s，which statement is TRUE? （）ACompass error and variation are equalBCompass north will be true northCVariation will equal deviationDThere will be no compass error
单选题Deviation is the angle between the（）.Atrue meridian and the axis of the compass cardBtrue meridian and the magnetic meridianCmagnetic meridian and the axis of the compass cardDaxis of the compass card and the degaussing meridian
单选题As a vessel changes course to starboard，the compass card in a magnetic compass（）.Aremains aligned with compass northBalso turns to starboardCfirst turns to starboard then counterclockwise to portDturns counterclockwise to port
单选题If the compass heading and the magnetic heading are the same then（）.Athe deviation has been offset by the variationBthere is something wrong with the compassCthe compass is being influenced by nearby metalsDthere is no deviation on that heading
单选题Variation in a compass is caused by（）.Aworn gears in the compass housingBmagnetism from the earth's magnetic fieldCmagnetism within the vesselDlack of oil in the compass bearings
单选题The principal purpose of magnetic compass adjustment is to（）.Areduce the variation as much as possibleBreduce the deviation as much as possibleCreduce the magnetic dip as much as possibleDallow the compass bowl to swing freely on its gimbals
单选题What is an advantage of the magnetic compass aboard vessels?（）ACompass error is negligible at or near the earth's magnetic polesBIt does not have to be checked as oftenCIt is reliable due to it's essential simplicityDAll points on the compass rose are readily visible
单选题If the gyrocompass error is east，what describes the error and the correction to be made to gyrocompass headings to obtain true headings?（）AThe readings are too low (small numerically) and the amount of the error must be added to the compass to obtain trueBThe readings are too low and the amount of the error must be subtracted from the compass to obtain trueCThe readings are too high (large numerically) and the amount of the error must be added to the compass to obtain trueDThe readings are too high and the amount of the error must be subtracted from the compass to obtain true
单选题The magnetic compass operates on the principle that（）.Alike magnetic poles attractBunlike magnetic poles repelCunlike poles attractDthe poles of the compass line up with the geographic poles of the earth
单选题When using the lifeboat compass，you must be careful to（）.Aset it on the centerline of the boatBapply the correction for compass errorCkeep metal objects away from itDAll of the above
单选题To center a compass bowl in its binnacle，you should have the ship on an even keel，heading north or south，and adjust the screws until（）.Athe compass heading is in line with the lubber's lineBthere is no lost motion in the gimbal ringsCno change of heading by compass is observed if you raise and lower the heeling magnetDthe gimbal rings do not strike the compass frame when they are tilted
单选题The compass error of a magnetic compass that has no deviation is（）.AzeroBequal to variationCeliminated by adjusting the compassDconstant at any geographical location
单选题Magnetic compass deviation（）.Avaries depending upon the bearing usedBis the angular difference between magnetic north and compass northCis published on the compass rose on most nautical chartsDis the angular difference between geographic and magnetic meridians
单选题When adjusting a magnetic compass for error，a deviation table should be made（）.Abefore correcting for any deviationBafter correcting for variationCafter adjusting the fore-and-aft and athwartships permanent magnetsDbefore the quadrantal correctors are placed on the compass