搜题请搜索小程序“爱下问搜题”
问题 单项选择题

下面关于ios类的叙述中，正确的是( )。

A．它是istream类和ostream类的虚基类

B．它只是istream类的虚基类

C．它只是ostream类的虚基类

D．它是ostream类的虚基类

答案

参考答案：A

单项选择题

SOX is an alternative (71) for XML. It is useful for reading and creating XML content in a (72) editor. It is then easily transformed into proper XML. SOX was created because developers can spend a great deal of time with raw XML. For many of us, the popular XML (73) have not reached a point where their tree views, tables and forms can completely substitute for the underlying (74) language. This is not surprising when one considers that developers still use a text view, albeit enhanced, for editing other languages such as Java. SOX uses (75) to represent the structure of an XML document, which eliminates the need for closing tags and a number of quoting devices. The result is surprisingly clear.

（74）处填（）。

A．interactive

B．markup

C．programming

D．command
查看答案
判断题

有的地区在农业和家畜业产生后还没有发明陶器，因此这一阶段不属于新石器时代.
查看答案