语音信息的带宽比较窄,在输入PC机进行数字化时,使用的取样频率一般为( )。
A.44.1KHz
B.16KHz
C.4KHz
D.8KHz
参考答案:D
根据句意和首字母提示写出单词.
1. W________ to our party.
2. We do morning e________ on the playground every day.
3. My mother is a d________ at the hospital.
4. My friends usually play b________ (篮球)on the playground.
5. He can play table t________.
简述在课程评价中,评价者通常要经历的几个步骤。