单项选择题
A fishing vessel casualty must be reported to the Coast Guard if it involves（）.
A.loss of life B.an injury requiring only first aid C.$(SA)10，000 in property damage D.loss of equipment which doesn't reduce the vessel's maneuverability
单项选择题 On tank vessels equipped with power operated cargo tank valves, the type of power operator most commonly used is （）.
单项选择题 下列哪些产品特性不符合叙做货押业务（）
单项选择题 关于在PowerPoint 2000中进行幻灯片的删除，以下叙述正确的是（）。
