题目内容
(请给出正确答案)
[单选题]
Optical fiber and coaxial are ()
A.Presentation Media
B.Transmission Media
C.Representation Media
D.Storage Media
提问人:网友whoami13
发布时间:2022-01-07
A.Presentation Media
B.Transmission Media
C.Representation Media
D.Storage Media
B、A communication mode in which optical waves are used as carriers and optical fibers are used as transmission media.
C、A communication mode in which optical waves are used as carriers and cables are used as transmission media.
D、A communication mode in which laser is used as carriers and optical fibers are used as transmission media.
B、Ultraviolet light
C、Infrared light
D、X-ray
A.they are close together
B.they are far away from each other
C.coaxial cables are used
D.fiber optical is used
A、Keyboard
B、Speaker
C、Microphone
D、Printer
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