单项选择题
A.stopper B.brake C.locker D.derrick
Weigh anchor and（）(留)one shackle in water.A.stayB.keepC...
单项选择题Weigh anchor and（）(留)one shackle in water.
A.stay B.keep C.leave D.have
Anchor（）(垂直).A. upB. downC. up and downD. up or down
单项选择题Anchor（）(垂直).
A. up B. down C. up and down D. up or down
On a vessel, lines are（）(挽牢) on bitts.A .make upB. made...
单项选择题On a vessel, lines are（）(挽牢) on bitts.
A .make up B. made fast C. singled up D. made up
