一般而言，投资者对美国中长期国债期货的多头头寸套期保值，则很_爱下问搜题

搜题请搜索小程序“爱下问搜题”

问题单项选择题

一般而言，投资者对美国中长期国债期货的多头头寸套期保值，则很可能要______。

A．购买利率期货
B．出售标准普尔指数期货
C．出售利率期货
D．在现货市场上购买美国中长期国债

答案

参考答案：C

解析：利率期货合约即国债期货合约。当套期保值者做期货合约空头时，在期货合约到期日有义务按合约价格交割美国中长期国债，这一价格锁定在债券的售价上。

单项选择题

An analog signal’s characteristic quantity representing data may (66) . at any instant, any value within a continuous (67) . For example, an analog signal may follow continuously the values of another physical quantity representing data.

A discrete signal is composed of (68) elements in time, each element having one or more characteristic quantities which can represent data. Examples of characteristic quantities are amplitude, waveform, (69) , and position in time. A digital signal is a special case of discrete signals, in which data are represented by a (70) number of well-defined discrete values that one of its characteristic quantities may take in time.

（66）处填（）。

A．acquire

B．collect

C．assume

D．fetch

判断题

民用建筑按使用功能不同，可分为居住建筑和公共建筑。