单项选择题
An intermediate spring is（）.
A.Fitted in each leg of the towing bridle
B.Generally located between the “fishplate” and the main towing hawser
C.Secured at the “H” bitts
D.Usually made of manila hawser
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相关考题
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单项选择题
A spanner is a（）.
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 -
单项选择题
A long splice in a line（）.
A.is used in running rigging
B.doubles the size of the line
C.is only used on fiber rope
D.is very weak -
单项选择题
A hook that will release quickly is a（）.
A.longshore hook
B.margin hook
C.marginal hook
D.pelican hook
