[单选] A vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel is called（）.
A . a vessel restricted in her ability to maneuver B . a vessel not under command C . a vessel engaged in fishing D . a vessel constrained by her draught
什么叫“雌核生殖”？
烟叶调拨销售方面的规范要求有哪些？
简述病原、寄主和环境的相互关系。
特种设备安全监督管理部门应当对发生事故的原因进行分析，并根据特种设备的管理和技术特点、事故情况对相关（）进行评估。 特种设备法规。 规章。 安全技术规范。 特种设备管理制度。
为什么松荷鲤适于高寒地区养殖？
A vessel which through some exceptional circumstance is unable to maneuver as required by these Rules and is therefore unable to keep out of the way of another vessel is called（）.
