Mariners should ensure correct()of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.
A、identification
B、distinction
C、discrimination
D、clearly seeing
A、identification
B、distinction
C、discrimination
D、clearly seeing
A、marine broadcast Notice to Mariners B、Weekly Notices to Mariners C、corrected editions of charts D、Light Lists
A、complicated circumstances B、changeable atmospheric pressure C、large density of traffic D、some strong signals from unwanted satellites
A、Admiralty Notices to Mariners B、SOLAS C、Admiralty Sailing Directions D、Guide to Port Entry
A、publications B、notices to mariners C、supplements D、Annual Summary of Admiralty Notices to Mariners