celestial（）

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

  A . a rotation B . a revolution C . space motion D . nutatio

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• A time diagram is a diagram of the celestial sphere as observed from above the（）.

  A . south celestial pole B . north celestial pole C . observer's meridian D . Greenwich meridia

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• （）is a term denoting the determination of a ship’s position by observations of Celestial or terrestrial objects，or by a combination of both．

  A . Course-planning B . Position-fixing C . Radar-plotting D . Stowage-plan making

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• 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 decrease

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• 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

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• The Cowherd chased the Weaver and the celestial troops with the help of the cowhide（）

  是 否

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