单项选择题
Progressive flooding may be indicated by（）.
A.ballast control alarms B.excessive draft C.excessive list or trim D.a continual worsening of list or trim
单项选择题 An inflatable liferaft can be launched by（）.
单项选择题 An inflatable liferaft is hand-launched by（）.
单项选择题 An inflatable liferaft should be manually released from its cradle by（）.
