In order to ensure the security of payment, financial instruments such as letters of credit and guarantees came into being.
In order to ensure the security of payment, financial instruments such as letters of credit and guarantees came into being.
A.正确
B.错误
正确答案：正确
Tag：货币金融经济学 中国大学MOOC货币金融经济学
时间：2021-12-13 15:20:46