The function of the video distributor is one channel of video input and multiple channels of video output, with the functions of impedance matching and signal amplification. ( )
A: 正确
B: 错误
A: 正确
B: 错误
A
举一反三
- The function of the video distributor is one channel of video input and multiple channels of video output, with the functions of impedance matching and signal amplification. ( ) A: 正确 B: 错误
- The signal transmission portion of the analog video surveillance system is responsible for the upstream transmission of the video signal and the downstream transmission of the control signal. ( ) A: 正确 B: 错误
- The traditional video encoding method is to process the entire video signal as a whole content, which can not be divided anymore, MPEG-4 encoding can achieve the complete extraction of a video information from the video signal, to meet human recognition habits of visual information. ( )
- In order to enable the computer to process the video, the analog video signal of the video source must be converted into a meter.The digital video form required by the computer is stored on the disk. This process is called the video () process. A: Sampling process B: ,Quantification process C: ,Decoding process D: ,Digitization process
- What are the functions of music mentioned in this video clip.
内容
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What are the functions the video shows about WeChat?
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Watch the video clip and answer the questions1. According to the video clip, which city is the greenest one in Asia?2. According to the video clip, what makes Copenhagen the top one eco-friendly city in the world?
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What features may be available when video signals take digital form? A: displaying multiple channels B: freezing frames C: zooming in for close-up D: All of the above
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( )用于加入声音,( )用于加入视频。 A: <;audio>; <;video>; B: <;video>; <;audio>; C: <;audio>; <;audio>; D: <;video>; <;video>;
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关于video标签的描述，下面说法正确的是（）。 A: video是一个视频标签 B: video是一个音频标签 C: video标签中可以添加autoplay属性 D: 在<;video>;和<;/video>;之间可以插入文字