单选题A celestial body will cross the prime vertical circle when the latitude is numerically ().AGreater than the declination and both are of the same nameBLess than the declination and both are of the same nameCGreater than the declination and both are of contrary nameDLess than the declination and both are of contrary name

单选题
A celestial body will cross the prime vertical circle when the latitude is numerically ().
A

Greater than the declination and both are of the same name

B

Less than the declination and both are of the same name

C

Greater than the declination and both are of contrary name

D

Less than the declination and both are of contrary name


参考解析

解析: 暂无解析

相关考题:

He was ( ) his early forties when he became Prime Minister. A、ofB、inC、fromD、after

________ when you cross the road.A、Do careB、CareC、Do be carefulD、To be careful

Which of the following components is typically used for voice transmissions and has a 10Mbpsmaximum transfer speed?() A. 110 blockB. Patch panelC. Vertical cross connectD. 66 block

You ______ cross the road when the traffic lights are red. It’s dangerous. 学科网 A. n You ______ cross the road when the traffic lights are red. It’s dangerous.A. needn’t B. may not C. mustn’t

A line of position from a celestial observation is a segment of a ______.A.circle of equal altitudeB.parallel of declinationC.parallel of altitudeD.vertical circle

A time diagram is a diagram on the plane of the ______.A.celestial meridianB.celestial equatorC.celestial horizonD.principal vertical circle

The error in the measurement of the altitude of a celestial body,caused by refraction,increases as the ______.A.horizontal parallax decreasesB.observer's height above sea level increasesC.humidity of the atmosphere decreasesD.altitude of the body decreases

The most accurate method of determining gyrocompass error while underway is by ______.A.Comparing the gyro azimuth of a celestial body with the computed azimuth of the bodyB.Comparing the gyro heading with the magnetic compass headingC.Determining from the chart the course made good between celestial fixesD.It cannot be determined accurately at sea due to drift of unknown currents

A celestial body will cross the prime vertical circle when the latitude is numerically ______.A.greater than the declination and both are of the same nameB.less than the declination and both are of the same nameC.greater than the declination and both are of contrary nameD.less than the declination and both are of contrary name

Which of the following components is typically used for voice transmissions and has a 10Mbpsmaximum transfer speed?()A、110 blockB、Patch panelC、Vertical cross connectD、66 block

单选题The magnetic compass magnets are acted on by the horizontal component of the Earth’s total magnetic force. This magnetic force is GREATEST at the().Anorth magnetic poleBsouth magnetic poleCmagnetic prime vertical meridianDmagnetic equator

单选题A line of position from a celestial observation is a segment of a ().Acircle of equal altitudeBparallel of declinationCparallel of altitudeDvertical circle

单选题Solid green arrows on the main body of a pilot chart indicate ().Aprevailing wind directionsBprevailing ocean current directionsCprobable surface current flowDshortest great circle routes

单选题In relation to the turning circle of a ship , the term advance means the distance().Agained at right angles to the original courseBgained in the direction of the original courseCmoved sidewise from the original course when the rudder is first put overDaround the circumference of the turning circle

单选题The error in the measurement of the altitude of a celestial body,caused by refraction,increases as the().Ahorizontal parallax decreasesBobserver's height above sea level increasesChumidity of the atmosphere decreasesDaltitude of the body decreases

单选题A time diagram is a diagram on the plane of the().Acelestial meridianBcelestial equatorCcelestial horizonDprincipal vertical circle

单选题A great circle track provides the maximum saving in distance on().Aeasterly courses in high latitudesBsoutherly courses in high latitudesCwesterly courses in low latitudesDeasterly courses in low latitudes that cross the equator

单选题The equator is().Athe primary great circle of the Earth perpendicular to the axisBthe line to which all celestial observations are reducedCthe line from which a celestial body's altitude is measuredDAll of the above

单选题The most accurate method of determining gyrocompass error while underway is by().AComparing the gyro azimuth of a celestial body with the computed azimuth of the bodyBComparing the gyro heading with the magnetic compass headingCDetermining from the chart the course made good between celestial fixesDIt cannot be determined accurately at sea due to drift of unknown currents

单选题A latitude line will be obtained by observing a body ().Aon the prime verticalBon the celestial horizonCat lower transitDon the Greenwich meridian

单选题A power-driven vessel,when towing astern,shall show().Atwo towing lights in a vertical lineBa towing light in a vertical line above the sternlightCtwo towing lights in addition to the sternlightDa small white light in lieu of the sternlight

单选题A celestial body’s complete orbit around another body is().Aa rotationBa revolutionCspace motionDnutation

单选题When the follower is on the base circle of the cam, the pump plunger is at the () of its stroke.AtopBmiddleCbottomDany of the above

单选题Concerning a celestial observation,the azimuth angle is measured from the principal vertical circle to the().AGreenwich celestial meridianBhour circle of the bodyClocal celestial meridianDvertical circle of the body

单选题The angle measured at the observer’s meridian from the elevated pole,clockwise or counterclockwise up to 180°,to the vertical circle of the body is the().Alocal hour angleBazimuth angleCmeridian angleDlongitude

单选题At the magnetic equator there is no induced magnetism in the vertical soft iron because().Athe lines of force cross the equator on a 0°-180°alignmentBthe quadrantal error is 0°Cthere is no vertical component of the Earth's magnetic fieldDthe intercardinal headings have less than 1°

单选题When out of sight of land, a ship’s position can be found by using().Athe coastal navigationBthe celestial navigationCtraditional navigationDthe great circle navigation