结构脚手架
参考答案：
用于砌筑和结构工程施工作业的脚手架。
能表明两千多年前我国的音乐文化已经达到很高水平的是
A．A
The issuance of asset backed securities (ABSs) versus straight debt would be desirable if:（）
A. a better credit quality is desired on the asset backed versus the corporation.
B. there are regulatory constraints on the deal.
C. the corporation’s credit rating may go up in the future.
