单选题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 - 题多多

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题目

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

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