( )为建设项目参与各方提供方便的信息检索服务。
A．建设项目信息分类层
B．建设项目信息搜索层
C．建设项目协同工作层
D．个性化设置层
参考答案：B
---Have you watched TV? Is there _______?
---_______. I feel really bored.
A．something new, nothing interesting
B．new anything, interesting anything
C．anything new, nothing interesting
D．new nothing, interesting something
发盘的撤回与撤销有什么区别
