A.blocks have been overhauled
B.hauling parts of two tackles are attached
C.hauling part leads through the movable block
D.hauling part leads through the standing block
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A.actual total loss
B.constructive total loss
C.general average
D.particular average
A.current setting your vessel on the wall
B.current setting into the lock chamber
C.an eddy working along the lower guide wall
D.current setting counterclockwise
A.any wire rope used for mooring
B.a fire-warp
C.a mooring line running diagonally to the keel
D.a mooring line perpendicular to the keel
A.keep a line from fraying
B.join lines of unequal size
C.stop off a line
D.shorten a line
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 chart with a scale of 1:80，000 would fall into the category of a（）.
A “bowline” is used to（）.
A CO2 extinguisher on a ship which has lost 10% of its charge must be（）.
A chart with a natural scale of 1:160，000 is classified as a（）.
A “reaching” course is one in which the wind（）.
A celestial body will cross the prime vertical circle when the latitude is numerically（）.
A tonnage tax is levied according to the（）.
A “sheepshank” is used to（）.
A chain bridle is used when towing astern because it（）.
A buoy with a composite group-flashing light indicates a(n)（）.