单项选择题 The maintenance work for sailors includes （）(清洁), repairing and painting work on board a ship. 正确答案A

单项选择题 The line leading at right angles to the （）(中线) from the forecastle to the shore is called the forward breast line.

单项选择题 Topside paint and （）(水线漆) are used on the different areas of the ship’s hull.