ITU-RP.1238传播模型分视距（LOS）和非视距（nLOS）两种情况。
查看答案
In fact, multimedia is just two media: and .
A. sound, video
B. pictures, video
C. animations, text
D. sound, pictures
Which of following statements is incorrect?
A. Multimedia is a kind of computer technology.
B. Multimedia is the combination of PCs and TV.
C. Multimedia is a mix of machine and ideas.
D. Multimedia is a form of communication.
standards are the main algorithms used to compress video and have become international standards since 1993.
A. MPEG
B. JPEG
C. MIDI
D. JPEG and MPEG
Video applications deal with the so-called in order to define images.
A. RGB
B. color spaces
C. YUV
D. pixel
微信支付 
支付宝支付