单项选择题
A. oil can B. rope C. heavy line D. head line
Release the （）(制动器)when letting go the anchor.A.stopper...
单项选择题Release the （）(制动器)when letting go the anchor.
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
