项目的经济评价包括（）、（）
参考答案：项目财务评价；国民经济评价
－Which one of those two houses would you buy?
－I would buy the _______ one, because I have a big family. [ ]
A. larger
B. largest
C. smaller
为降低齿轮啮合噪声，JM5-100A变速器倒档齿轮为（）齿轮。
A、伞形
B、斜齿
C、直齿
