单项选择题
A. How many revolutions? B. How many rings? C. How much revolutions? D. What revolution?
航向复原。（）A. Course again.B. Course two.C. Course more.D. ...
单项选择题航向复原。（）
A. Course again. B. Course two. C. Course more. D. Course line.
舵不灵。（）A. No steering.B. No steerage.C. A+B+D D. No an...
单项选择题舵不灵。（）
A. No steering. B. No steerage. C. A+B+D D. No answer.
留心操舵。（）A. Mind the wheel.B. Be careful about steering.C...
单项选择题留心操舵。（）
A. Mind the wheel. B. Be careful about steering. C. Mind the helm. D. A+C
