A、parallax and personal error
B、inaccuracies in the reading and reference level
C、visibility and magnitude
D、All of the above are correct
更多“Apparent altitude is sextant altitude corrected for（）.”相关的问题
A、Should the engine stop without apparent reason B、The engine should stop without apparent reason C、The engine stops without apparent reason D、The engine is stopped without apparent reason
A、circle of equal altitude B、parallel of declination C、parallel of altitude D、vertical circle
A、Errors due to unusual parallax are eliminated B、The same body can be used for a fix from observations separated by several minutes C、The declination is the only information needed from the almanac D、The semidiameter correction of the sextant altitude is eliminated
A、A.There is apparent condensate in piping B、B.The steam is not discovered after admitting steam C、C.The condensate should be fully loaded in the piping as admitting steam D、D.The condensate should be fully drained from the piping while admitting steam
A、when the declination and latitude are of different names B、when the declination is greater than and the same name as the latitude C、if the vessel is stopped or making bare steerageway D、on a fast vessel on northerly or southerly headings
A、four vessels are nearby B、a vessel has a steady bearing at a constant range C、there is any doubt that a risk of collision exists D、a special circumstance situation is apparent
A、the primary great circle of the Earth perpendicular to the axis B、the line to which all celestial observations are reduced C、the line from which a celestial body's altitude is measured D、All of the above
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