A.conspicuous
B.inconspicuous
C.a government facility or station
D.a radio transmitter
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A.does not change
B.improves rapidly
C.improves only slightly
D.becomes poor
A.stop
B.to stop
C.stopping
D.stopped
A.you recovery
B.you recover
C.you recovering
D.you recovered
A.Weekly Editions
B.Quarterly Editions
C.Annual Editions
D.Monthly Editions
A.every day
B.every week
C.every month
D.every year
最新試題
Information for updating nautical charts is primarily found in the（）.
Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.
Steam smoke will occur when（）.
The broken magenta line which runs parallel to the shorebetween Roanoke Point and Mattituck Inlet marks a（）.
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
What is the significance of the broken magenta lines which roughly parallel the shore between Roanoke Point and Orient Point on Long Island（）.