单项选择题
The purpose of the “set” hand on an aneroid barometer is to（）.
A.adjust the barometer
B.indicate any change in the reading of the barometer
C.provide a correction for height above sea level
D.provide a correction for temperature changes
点击查看答案&解析
相关考题
-
单项选择题
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 -
单项选择题
The boom stops on a pedestal crane prevent the boom from（）.
A.being raised too high
B.swinging at sea
C.overloading when not in use
D.being lowered too low -
单项选择题
The average height of the surface of the sea for all stages of the tide over a 19 year period is called（）.
A.mean high water
B.mean low water
C.half-tide level
D.mean sea level
