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 size of wire rope is determined by the（）.
What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.
When a davit-launched raft is lowered from a ship，upon becoming waterborne，the raft is released by（）.
What best describes an anchor buoy（）.
The safest procedure used to rig a guy and preventer is to have the guy（）.
The ladder shall（）.
You are preparing to slush a stay on your vessel by lowering yourself down the stay in a bosun’s chair.The proper way to do this is to ride down the stay on a riding shackle（）.
An intermediate spring is（）.
When paying out nylon line from around the bitts（）.
In the manufacture of wire rope，if the wires are shaped to conform to the curvature of the finished rope before they are laid up，the rope is called（）.