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
What is the use of the books of Admiralty List of Lights and Fog Signals? Their use is to （）.
After the boat is at the top of the davit heads，the davit arms begin moving up the tracks and are stopped by the（）.
After being rescued from the vessel accident，the people agreed that they had much to（）.
A sweep oar is an oar that is（）.
Aboard a survival craft，ether can be used to（）.
After launching，an inflatable raft should be kept dry inside by（）.
After being launched from a vessel，totally enclosed survival craft which have been afloat over a long period require（）.
An inflatable liferaft is hand-launched by（）.
The information on（）is not likely found in The Mariners Handbook.
Lines drawn through points on the Earth having the same atmospheric pressure are known as （）.