单项选择题
They should take care of（锚链）（）to ensure that they are in normal condition.
A. anchor chains B. anchor ball C. anchor gear D. anchor ring
单项选择题 They should take care of（锚）（）to ensure that they are in normal condition.
单项选择题 Take down （）(G旗).
单项选择题 A （）(救生圈) should be located on the gangway.
