A. deck fitting used to secured mooring lines B. casting fitting at the side of a weatherdeck, used as a fairlead C. sharp block of wood used to support hygroscopic cargo D. smoke pipe for the galley stove
A. 早强剂 B. 缓凝剂 C. 引气剂 D. 速凝剂
A. 无船名船号 B. 无船民证 C. 无船舶证书 D. 无船籍港