单项选择题
The maximum difference between mean time and apparent time is （）.
A.equal to the longitude expressed in time units
B.about 16 minutes
C.the difference between the GHA of mean sun and the first point of Aries
D.15°of arc
点击查看答案&解析
相关考题
-
单项选择题
The description Racon beside an illustration on a chart would mean a （）.
A.radar conspicuous beacon
B.circular radiobeacon
C.radar transponder beacon
D.radar calibration beacon -
单项选择题
The compass rose on a nautical chart indicates both variation and （）.
A.deviation
B.annual rate of variation change
C.precession
D.compass error -
单项选择题
The charts sold are of （）.
A.newly edition with up to date correction and in reasonable prices
B.the current edition and incorporate the last Notices to Mariners correction
C.the current edition and incorporate the latest Notices to Mariners correction at the time of sale
D.brand-new one with up to date correction and clean writing
