The principal vertical circle is that great circle on the celestial sphere that passes through the __________.
A
zenith and the celestial body
B
zenith and the north and south poles
C
poles and Greenwich
D
zenith and is parallel to the horizon
E
İlgili Sorular
The wind speed and direction observed from a moving vessel is known as __________.A vessel heading NNE is on a course of __________.All aids to navigation listed in the Mississippi River System Light List are shown as miles from a r...While the Pilot is embarked he or she __________.On a working copy of a weather map, an occluded front is represented by which color line?