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
The Daily Memorandum contains information on（）.
On the high seas，a fog signal consisting of one prolonged blast followed by four short blasts would indicate the presence of a（）.
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
Which is the correct procedure for anchoring a small to medium size vessel in deep water （）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）
In revised editions of Admiralty charts the（）are corrected first．
Vessels should not anchor or trawl in the vicinity of pipelines and are（）in the pipeline area shown on the chart.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.