A.warm front at night
B.low pressure area
C.anticyclone
D.lack of frontal activity
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A.in
B.on
C.with
D.by
A.is decreased
B.decreased
C.decreases
D.are decreased
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
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
最新試題
Periodic publications notifying changes in，or additions to，previously published navigational data are（）.
On a nautical chart，the inner ring of a compass rose indicates（）.
Navigational warnings and weather bulletins for shipping（）from Singapore Radio.
Steam smoke will occur when（）.
The Daily Memorandum contains information on（）.
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.
The charts show two dashed lines crossing the river justsouth of St. Catherine Bar Light. What does this indicate? （）
LOW AT 34N 135E ESLY SLWLY INTST NC．This description is most likely to be under the heading of（）.
On notification by Admiralty Notice to Mariners that a new edition of one of the books，or a new supplement to one，has been published，it should be obtained（）.