A celestial body’s complete orbit around another body is（）.

A、a rotation

B、a revolution

C、space motion

D、nutation

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更多“A celestial body’s complete orbit around another body is（）.”相关的问题

第1题

[单选题] A celestial body’s complete orbit around another body is（）.

A、a rotation  B、a revolution  C、space motion  D、nutation  

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第2题

[单选题] Concerning a celestial observation，the azimuth angle is measured from the principal vertical circle to the（）.

A、Greenwich celestial meridian  B、hour circle of the body  C、local celestial meridian  D、vertical circle of the body  

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第3题

[单选题] The equator is（）.

A、the primary great circle of the Earth perpendicular to the axis  B、the line to which all celestial observations are reduced  C、the line from which a celestial body's altitude is measured  D、All of the above  

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第4题

[单选题] The error in the measurement of the altitude of a celestial body，caused by refraction，increases as the（）.

A、horizontal parallax decreases  B、observer's height above sea level increases  C、humidity of the atmosphere decreases  D、altitude of the body decreases  

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第5题

[单选题] 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 body  B、Comparing the gyro heading with the magnetic compass heading  C、Determining from the chart the course made good between celestial fixes  D、It cannot be determined accurately at sea due to drift of unknown currents  