A.cross connection line between two main fire lines
B.special wrench for the couplings in a fire hose line
C.tackle rigged to support a fire hose
D.none of the above
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A.is used in running rigging
B.doubles the size of the line
C.is only used on fiber rope
D.is very weak
A.longshore hook
B.margin hook
C.marginal hook
D.pelican hook
A.fire pumps
B.fire mains
C.hydrants and hoses
D.closing appliances which are kept permanently closed at sea
A.a curve of minimum operational metacentric height（GM）versus draught
B.instructions concerning the operation of cross-flooding arrangements
C.the signals or lights being exhibited or sounded
D.all other data and aids which might be necessary to maintain stability after damage
A.Certificate of Inspection
B.American Bureau of Shipping Classification Certificate
C.International Convention for the Safety of Life at Sea Certificate
D.Certificate of Registry
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The Charterers shall have the privilege to ship dangerous cargo in accordance with（）Code or any competent authorities’ regulations，as applicable.
In a married falls rig at the after end of a hatch，a boom is rigged in a fore and aft line through its heel.Stresses on the outboard guy will be LEAST if the guy is made fast at a point（）.
What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.
When paying out nylon line from around the bitts（）.
The size of wire rope is determined by the（）.
Flanking rudders effect a vessel’s heading because of the（）.
The best method of protecting that portion of a fiber anchor line nearest the anchor from chafing on the bottom is by（）.
A spanner is a（）.
An intermediate spring is（）.
As you hold a piece of manila line vertically in front of you，the strands run from the lower left to the upper right.Which type of line is this（）.