软件的界面有多种类型，现在大多数网络应用软件采用（ ）界面。
A．对话框
B．单文档
C．多文档
D．浏览器
参考答案：D
The recent conference on the effective use of the seas and oceans was another attempt resolving major differences among countries with conflicting interests.
A．resolve
B．resolves
C．to resolve
D．being resolved
未标明超负荷使用脚手架，一般为每平方米不超过（）kg为限。
