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
您可能感興趣的試卷
你可能感興趣的試題
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
A.should always be immediately corrected
B.will always cause a vessel to capsize
C.always results from off-center weights
D.All of the above are correct
最新試題
A sweep oar is an oar that is（）.
After jacking down your liftboat you have an unexpected list.You find that the only cause of this list must be a flooded leg.Your next course of action should be to（）.
Light Lists for coastal waters are（）.
Many of the lights on this coast are placed so high as to be frequently obscured by（）.
The daily predictions of the times and heights of high and low water for a selection of Standard Ports are given in（）.
After being rescued from the vessel accident，the people agreed that they had much to（）.
The program of graphical predictions of height against time for a period of up to seven consecutive days is contained in（）.
Of the following，（）is not likely found in The Mariners Handbook.
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（）.