单项选择题
A block and tackle is “rove to advantage”. This means that the（）.
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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相关考题
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单项选择题
A ballasted vessel sinks enroute to a dry dock. Under these circumstances，the vessel’s owner can claim（）.
A.actual total loss
B.constructive total loss
C.general average
D.particular average -
单项选择题
A backlash below a lock is defined as a（）.
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 -
单项选择题
A “spring line” is（）.
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
