单项选择题
A.meridian angle B.altitude C.right ascension D.azimuth angle
In the horizon system of coordinates what is equivalent...
单项选择题In the horizon system of coordinates what is equivalent to latitude on the Earth?（）.
A.Altitude B.Zenith C.Declination D.Zenith distance
单项选择题In the horizon system of coordinates what is equivalent to the equator on the Earth?（）.
A.Prime vertical circle B.Principal vertical circle C.Parallels of altitude D.Horizon
In order for a star to be used for a sight at lower tra...
单项选择题In order for a star to be used for a sight at lower transit，the star must（）.
A.be circumpolar B.have a declination equal to or greater than your latitude C.have a GHA of 180° D.have the SHA equal to or less than the LHA
