单选题
发布日期:2021-03-22
Each shall keep her course and speed
Each shall alter her course to starboard
Each shall pass on the portside to the other
Each shall indicate such action by one short blast on the whistle
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船舶的舵用于控制航向,螺旋桨用于推进与制动船舶。在控制船舶的航向、位置、速度、回转角速度等方面,最基本的要求是掌握船舶的()。
历史散文从内容看,有以记事为主的和以记人物为主的两类;从体裁上看,主要有编年体、纪传体等,《资治通鉴》应属编年体。
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房地产法律事实的种类可分为()
责任保险的实质是()
下列疾病不会引起嗜酸性粒细胞增多的是()
凉开方剂中长于芳香开窍,化浊辟秽的是()
每个射野对靶区剂量的贡献的相对分数为()
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