进行期间费用的业务核算：（1）企业收到存款收息收入5 000元。（2）月末计提短期借款利息1 000元。（3）企业以银行存款支付法律咨询费2 000元。（4）企业开出转账支票支付产品宣传费3 000元。

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