单选题
1分
Any alteration of course and/or speed to avoid collision shall, if the circumstances of the case adm...
Any alteration of course and/or speed to avoid collision shall, if the circumstances of the case admit,__________to another vessel observing visually or by radar.
参考答案: A
参考解析: 为避免碰撞的任何航向和或航速的改变应,如环境许可,大的足以容易明显地被他船以视觉或雷达观测到。