【判断题】If a welder knows nothing about stress and strain, his welding job would always fail.
【单选题】. --- Could you fetch me my glasses from the kitchen? ---__________.
【简答题】摇摆阻尼器(用于感量为0.1mg的阻尼天平的专用零件)
【简答题】船舶在以下哪种情况下发生的摇摆最危险? A、浅水区航行 B、海浪中纵向摇摆 C、海浪中横向摇摆 D、顶风浪航行
【简答题】摇摆阻尼器(用于感量为0.1毫克的阻尼天平的专用零件)
【单选题】—Could you fetch me my glasses from the study? — ▲ .
【判断题】船舶重心越低其摇摆周期就越大,重心越高其摇摆周期就越小。