A. oil B. gas C. water and fuel D. timber
单项选择题The standard size of the containers is ()high.
A.9ft B.8ft C.8m D.9m
单项选择题This is deck cargo. ()stow it in the holds.
A.Not B.Notto C.Don’t D.Can
单项选择题Before leaving the harbour, all derricks must be ()properly.
A.tightened B.secured C.unfastened D.loaded
单项选择题()operation, any obstacles in the way of hatches must be removed and cleaned.
A.Before B.During C.After D.Within
单项选择题Each ()consists of two or more panels.
A.cover B.hatch C.derrick D.winch