建筑工程方案设计投标文件一般包括( )。
A.商务文件和技术文件
B.设计文件和商务文件
C.设计文件和资格证明文件
D.技术文件和资格证明文件
参考答案:A
如图所示,平行主光轴和通过光心的两条光线入射到凸透镜上,画出这两条光线的折射光线。
Which of the following statements about creating a collateralized mortgage obligation (CMO) is FALSE A CMO:()
A. redistributes the risk between the tranches on an unequal basis.
B. redistributes the risk between the tranches on a random basis.
C. does not affect the overall risk of prepayment.