单项选择题
A. Full ahead! B. Slow astern! C. Half astern! D. Dead astern!
后退二！（）A. Full ahead!B. Slow astern!C. Half astern!D. Ah...
单项选择题后退二！（）
A. Full ahead! B. Slow astern! C. Half astern! D. Ahead three!
尾推全速向左！（）A. Bow stern full to port!B. Bow stern half to...
单项选择题尾推全速向左！（）
A. Bow stern full to port! B. Bow stern half to port! C. Stern thrust half to starboard ! D. Stern thrust full to port!
尾推半速向右！（）A. Bow stern full to port!B. Bow stern half to...
单项选择题尾推半速向右！（）
A. Bow stern full to port! B. Bow stern half to port! C. Stern thrust half to starboard ! D. Bow thrust full to port!
