單項(xiàng)選擇題
A.the descriptions B.the measurements C.the specifications D.the prescriptions
A.anchor windlass B.jumbo boom C.rudder D.steering engine
A.capstan B.dog wheel C.fairlead D.wildcat
A.pawls B.devil's claws C.whelps D.pockets
A.aspect ratio B.constriction ratio C.rudder ratio D.steering ratio
A.bases B.gudgeons C.pintles D.rudder lugs
A.on each watch,immediately before being relieved B.before embarking on a voyage of more than 24 hours C.daily,at 1200 local zone time D.weekly,before 0000 Sunday
A.when a new Master assumes command B.daily,at 0800 local zone time C.weekly,before 2400 Saturday D.immediately after assuming the watch
A.unwatched B.surrounded by riprap C.a minor light D.constructed on an artificial island
A.rudder keys B.rudder palms C.lifting flanges D.shoes of the rudder
A.thickness of the connected members B.diameter of the head C.entire length of the rivet D.diameter of the shank