单项选择题
A. Steady as she goes! B. Keep straight! C. Keep right! D. Keep left!
极低速控制.()A. Low speed control .B. Inching control .C. Hi...
单项选择题极低速控制.()
A. Low speed control . B. Inching control . C. High speed control. D. Slow speed control.
前进三!()A. Full ahead!B. Slow ahead!C. Dead ahead!D. Ahea...
单项选择题前进三!()
A. Full ahead! B. Slow ahead! C. Dead ahead! D. Ahead three.
紧急后退三。()A. Full astern!B. Double full astern!C. Emergen...
单项选择题紧急后退三。()
A. Full astern! B. Double full astern! C. Emergency full astern! D. Emergency three astern!