信息资源整合与汇聚是把双刃剑。
参考答案：对
Which of the following statements about exchange-traded derivatives is FALSE()
A. They are liquid and provide price information.
B. They are standardized contracts.
C. They carry significant default risk.
安全带的报废年限为多少？（）
A.1-2年
B.2-3年
C.3-5年
D.4-5年
