单项选择题
A.used with the equation of time B.used in the form of LHA Aries C.calculating the time of moonrise D.determining local apparent time
Sidereal time is NOT used（）.A.as the basis for star cha...
单项选择题Sidereal time is NOT used（）.
A.as the basis for star charts B.to enter a star finder C.in sight reduction using Pub 249 D.in sight reductions of planet observations
Right ascension is primarily used by the navigator for（...
单项选择题Right ascension is primarily used by the navigator for（）.
A.calculating amplitudes B.calculating great circle sailings by the Agiton method C.entering the Air Navigation Tables (Selected Stars) Pub 249 D.plotting on star finders
Planetary aberration is due，in part，to（）.A.refraction o...
单项选择题Planetary aberration is due，in part，to（）.
A.refraction of light as it enters the Earth's atmosphere B.rotation of the Earth on it's axis C.the body's orbital motion during the time required for its light to reach Earth D.a false horizon
