A.comes directly over the bow
B.comes directly over the stern
C.comes over an area extending from broad on the bow to the quarter
D.has no effect on the vessel
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A.when anchoring in the Mediterranean
B.when docking stern to a berth
C.when docking bow to a berth
D.when anchoring in a strong current
A.loss of maneuverability
B.lines to part
C.damage to the towing vessel and tow
D.a saving in the transit time
A.small plate which fills the aperture between riveted strakes and the vessel framing
B.backing plate which is used to level the strakes while riveting，and then removed
C.internal frame to which the side shell is riveted
D.seam that is welded after riveting is completed
A.matching pulse rates of at least 20 stations
B.an automatic on-and-off switch
C.a horizontal matching of all delayed hyperbolic signals
D.automatic signal acquisition and cycle matching
A.be a stopper
B.shorten a line
C.join lines of equal size
D.keep a line from passing through a sheave
最新試題
A “spring line” is（）.
A celestial body will cross the prime vertical circle when the latitude is numerically（）.
A chain bridle is used when towing astern because it（）.
A continual worsening of the list or trim of any floating ship indicates（）.
A “sheepshank” is used to（）.
A “full service” Loran-C receiver will provide（）.
A tonnage tax is levied according to the（）.
A “fifteen-pound” CO2 extinguisher is so called because（）.
A CO2 extinguisher on a ship which has lost 10% of its charge must be（）.
A “check” line is（）.