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
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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 -
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A.C
B.Cl
C.Co
D.c -
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A.Surging
B.Spilling
C.Plunging
D.Converging
