A.Mercator charts／Loran charts
B.Admiralty charts／Routeing charts
C.large scale charts／small scale charts
D.small scale charts／large scale charts
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A.Plotting radio bearings over a long distance
B.Determining latitude and longitude of a fix
C.Measuring rhumb line distances
D.Measuring rhumb line directions
A.warm front at night
B.low pressure area
C.anticyclone
D.lack of frontal activity
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
最新試題
The height of a tide can be increased by（）.
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
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 fog most commonly encountered at sea is called（）.
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（）.
On the approach of a warm front the barometric pressure usually（）.
Steam smoke will occur when（）.
Weekly NMs are available without subscription from appointed（）.
Section V of the ADMIRALTY NOTICES TO MARINERS is（）.