A.vertical distance from the tidal datum to the ocean bottom plus the height of the tide
B.vertical distance from the tidal datum to the ocean bottom
C.average height of water over a specified period of time
D.average height of all low waters at a place
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A.capital letters
B.italics
C.boldface print
D.underlined letters
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
最新試題
Navigational warnings are published according to（）.
RYUKYU S TO SE 6 BEC 4－5.ISOL SHWRS.SEA 3 M BEC 2 M.SWELL SE 3－4M.This description is likely to be under the heading of（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
Information for updating nautical charts is primarily found in the（）.
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.
On a nautical chart，the inner ring of a compass rose indicates（）.
The height of a tide can be increased by（）.
The range of a light on Admiralty Charts is normally the（）.
On the approach of a warm front the barometric pressure usually（）.
Generally，（）are used as the track charts on the high sea，（）are used for harbors，inland waters and coastal areas．