下载APP
【单选题】
一张CD盘上存储的立体声高保真全频带数字音乐约可播放1小时，则其数据量大约是___________。
A.
800MB
B.
635MB
C.
400MB
D.
1GB
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Dear Mr. Smith: Thank you very much for your inquiry dated December 12, 2002. I am glad to tell you that we are an outstanding hi-tech company specializing in telephone facilities and are able to of...
A.
telephone recorders
B.
exclusive products
C.
telephone facilities
D.
mobile telephones
【单选题】16-47.下列关于语音和全频带声音的叙述,错误的是
A.
语音信号的带宽小于全频带声音的带宽
B.
它们的数字化过程都包含取样、量化和编码等3个过程
C.
数字化处理时,语音信号的采样频率较低
D.
它们通常采用相同的压缩编码标准进行压缩
【单选题】Task 2Directions: This task is the same as Task 1．The 5 questions or unfinished statements are numbered 41 through 45.Dear Mr．Smith: Thank you very much for your inquiry dated December 12, 2002．I am g...
A.
telephone recorders
B.
telephone facilities
C.
exclusive products
D.
mobile telephones