下列保险合同属于强制保险合同的是( )。
A．设计责任保险
B．安装工程一切险
C．建筑意外伤害保险
D．工程监理责任保险
参考答案：C
实体一联系模型是一种常用的高级概念数据模型，而 【4】 是实体—联系模型中的核心。
______ that some government leaders abuse their authority and position to get illegal profits for themselves.
A．It has been revealed
B．It revealed
C．It is revealed
D．It had been revealed
