A.capital letters
B.italics
C.boldface print
D.underlined letters
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A.conspicuous
B.inconspicuous
C.a government facility or station
D.a radio transmitter
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
最新試題
Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．
Weekly NMs are available without subscription from appointed（）.
On a nautical chart，the inner ring of a compass rose indicates（）.
Many navigational warnings are of a temporary nature，but others remain in force for several months or may be succeeded by（）.
Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.
Steam smoke will occur when（）.
Navigational warnings are published according to（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
What is the most important source of information to be used in correcting charts and keeping them up to date（）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）