The main contents of the national monetary system are（）.

A.Regulate money materials

B.Regulate monetary unit

C.Regulate types of money in circulation

D.Regulate the legal capacity to pay

E.Regulate the circulation procedures for money issuance

E.Regulate the money issuance preparation system

正确答案：Regulate money materials；Regulate monetary unit；Regulate types of money in circulation；Regulate the legal capacity to pay；Regulate the circulation procedures for money issuance；Regulate the money issuance preparation system