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 “sheepshank” is used to（）.
A conscious victim who has suffered a blow to the head has symptoms that indicate the possibility of concussion. If the patient feels no indication of neck or spine injury，recommended treatment would include（）.
A “fifteen-pound” CO2 extinguisher is so called because（）.
A tonnage tax is levied according to the（）.
A “figure eight” knot is used to（）.
A chain bridle is preferable to a wire rope towing bridle on a long ocean tow because chain（）.
A backlash below a lock is defined as a（）.
A casualty report of an intentional grounding of a ship is required under what condition?（）
A celestial body will cross the prime vertical circle when the latitude is numerically（）.
A “l(fā)oose” tow may cause all of the following EXCEPT（）.