A.decks B.cabins C.holds D.positions
A.matters B.happens C.refers D.applies
A.Using a medium graphite grease as a lubricant B.Operating a winch too slow C.Using a sheave with an undersized throat D.A sheave diameter of 24 times the wire's diameter
A.to B.in C.on D.with
A.tripping line B.tripping bracket C.norman pin D.steamboat ratchet