单项选择题
A.becket bend
B.two bowlines
C.single carrick bend
D.square knot
单项选择题 Temporary seizings on wire rope are made with().
单项选择题 Sufficient cargo tanks shall be()prior to each ballast voyage in order that,taking into account the tanker’s trading pattern and expected weather conditions,ballast water is put only into cargo tanks which have been crude oil washed.
单项选择题 Stuffer-braid rope has().