在UML 2.0中，（ ）强调消息跨越不同对象或参与者的实际时间，而不仅仅关心消息的相对顺序；它能够（ ）。
问题1选项
A.定时图
B.通信图
C.顺序图
D.交互概览图
问题2选项
A.表示对象之间的组织结构
B.直观地表示对象之间的协作关系
C.把状态发生变化的时刻以及各个状态所持续的时间具体地表示出来
D.确定参与交互的执行者
正确答案及解析
正确答案
解析
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