Optical fiber and coaxial are ()
A.Presentation Media
B.Transmission Media
C.Representation Media
D.Storage Media
- · 有4位网友选择 B,占比40%
- · 有3位网友选择 A,占比30%
- · 有2位网友选择 C,占比20%
- · 有1位网友选择 D,占比10%
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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