One of the innovations introduced by Bretton Woods was the creation of the Special Drawing Right or SDR. The SDR is an international reserve asset created by the:
A.
U.S. Department of the Treasury.
B.
International Bank of Reconstruction and Development (IBRD).
C.
World Bank (WB).
D.
International Monetary Fund (IMF).
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】抑制载波的双边带调制 DSB 信号的频谱 S DBS (ω) 是调制信号 m ( t )的频谱的线性搬移,因而是一种线性调制。除不含有 ________ 离散谱外, DSB 信号的频谱与 AM 信号的频谱完全相同,仍由上下对称的两个边带组成。