A. 正确 B. 错误
A. urgency or an emergency B. the vessel's national identity signal C. a group from the general signal code D. a group from the medical signal code
A. 饥贫的年代,理想就是温饱 B. 离乱的年代,理想就是和平 C. 安定的年代,理想是繁荣 D. 受奴役的阶层,理想是翻身