1. 在结构使用期间，其值不随时间变化的是（） A. 永久荷载 B. 可变荷载 C. 风荷载 D. 地震荷载 ...

16. （ ）, which stands for Motion Picture Experts Group (MPEG) Layer 3, is rapidly becoming the standard for music transmission via Internet. A. MP3 B. MP4 C. JPEG D. AVI ...

11. （ ） shorts for Waveform. It is the audio file format of Microsoft, and it is the waveform sound file format in Windows defined by Microsoft. It is the most common file format of digital sound derived from sampling. A. MIDI B. WAV ...

6. （ ）(MIS) are designed to take the relatively raw data available through a TPS and convert them into a summarized and aggregated form for managers, usually in a report format. A. Decision Support Systems B. Expert Systems C. Manage...

1. （ ） shorts for Audio-Video Interleaved. It is a video file format supported by Windows and some other software. It can handle the synchronous problem between audio and video information by using the video lossy compressing technology...

6. Microsoft Access is a database management system from Microsoft, packaged with Microsoft Office.（ ） A. 错误 B. 正确 ...

1. FTP is the messages, usually text, send from one person to another via the Internet.（ ） A. 错误 B. 正确 ...

16. （ ）, type of network in which all communications devices are connected to a common channel, with no central server. A. Bus network B. Star network C. Ring network D. none of the above ...

11. （ ）, difference between the lowest and highest frequencies transmitted in a particular channel or system. A. Amplitude B. Bandwidth C. Bridge D. Network ...

6. A （ ） is a highly intelligent device that supports connectivity between both like and unlike LANs,and between LANs and WANs or MANs. A. router B. repeater C. switch D. bridge ...