A.fix
B.dead-reckoning position
C.running fix
D.probable position
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A.plane tangent at one point
B.cylinder tangent at one parallel
C.cone tangent at one parallel
D.series of cones tangent at selected parallels
A.when at anchor
B.only when making way
C.at any time when underway
D.only when the identifying lights are not being shown
A.aground
B.at anchor
C.not under command
D.being towed
A.average wind conditions
B.tidal currents
C.magnetic variation
D.average limits of field ice
A.B flammable liquid
B.C flammable liquid
C.D combustible liquid
D.E combustible liquid
最新試題
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
An orange flag showing a black circle and square is a（）.
For details of these and other lights the larger scale charts and Admiralty Lists should be （）.
The information on（）is not likely found in The Mariners Handbook.
The international number，location and/or name，geographical co-ordinates，characteristics and intensity，elevation in metres，range in sea miles and description of structure of a light can be found in（）.
The latest known details of lights are given in（）.
Before personnel are lifted from a vessel in a personnel basket，the vessel should be（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
The Coast Radio Stations are found in（）.
Admiralty EasyTide（）.