单项选择题
Ship’s steering gear refers to（）.
A.cargo handling machines B.deck winches and derricks C.engine-room tools D.course controlling system
单项选择题 Some goods are missing（）terrible weather.
单项选择题 The abbreviation RYC in a marine cable generally stands for（）.
单项选择题 The angular motion of a ship in the athwart ship is termed（）.
