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
For what purpose would using a Lambert conformal chart be more convenient than using a Mercator?（）
LOW ABOUT 300 MILES SOUTHWEST OF LISBON 1004 MOVING SLWLY SOUTHEAST COMMA FILLING 1006 BY MIDNIGHT.This phrase is likely to be under the heading of（）.
Which would influence a magnetic compass（）.
Information for updating nautical charts is primarily found in the（）.
The best estimate of the wind direction at sea level can be obtained from observing the direction of the（）.
On the approach of a warm front the barometric pressure usually（）.
Weekly Notices are dated for the（）appropriate to the week they are issued on the UKHO website.
The fog most commonly encountered at sea is called（）.
（）is the system for the broadcast and automatic reception of maritime safety information by means of narrow-band direct-printing telegraphy.
Why is a warning sign displayed at the gangway or access point of a barge during cargo transfer（）.