下列投资和费用构成项目中，属于建设项目总投资中的建设投资的是（）。
A．流动资金投资
B．建设期利息
C．经营成本
D．预备费
参考答案：D
Great changes have taken place in that school. It is no longer it was 20 years ago, it was so poorly equipped.
A．what; when
B．that; which
C．what; which
D．which; that
OSI.RM定义了多少层（）
A.5层
B.6层
C.7层
D.3层
