【单选题】一度电可以供 220V 、 200W 的灯泡正常发光的时间是( )
【单选题】专业的核心特质是指其必须具备专业知识、服务理想和
【单选题】The three men realized that their trip was finished when they __________. 查看材料
【单选题】一度电可以供220v、25w的灯泡正常工作( )小时。
【多选题】The travel itineraries can be divided into three types according to the aim of the travel: _________, _________ and ___________.
A.
special interest package
【单选题】专业与非专业的根本区别在于专业活动需要独特的 ( )