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
After launching，an inflatable raft should be kept dry inside by（）.
Aboard a survival craft，ether can be used to（）.
A man aboard a vessel，signaling by raising and lowering his outstretched arms to each side，is indicating（）.
An inflatable liferaft is hand-launched by（）.
A sweep oar is an oar that is（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
The light vessel is reported（）.
When an azimuth of the Sun has been taken and the deviation of the standard magnetic compass computed，the watch officer should record the results（）.
The information on ocean voyage planning with routeing details for powered and sailing vessels is likely found in（）.
Important changes to charts and lights（including temporary ones），radio signals and sailing directions are listed in（）.