AAA是指（）。
A.Accounting
B.Authentication
C.Authorization
D.Access
参考答案：A, B, C
沥青路面常见的裂缝类病害一般有（）。
A.纵向裂缝
B.横向裂缝
C.网裂
D.反射裂缝
E.衍射裂缝
An analyst does research about yield spread. Which of the following embedded options in a bond is most likely t0 result in the highest yield spread over a comparable option-free Treasury security（）
A. Call option.
B. Floor on a floater.
C. Conversion option.
