The method of dividing the medium into communication channel is called ______.
A. EMI
B. TDM
C. FDM
D. PCM
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Transmission media are classified as wired and _________.
A. the telephone line
B. the twisted pair cable
C. the optical fibre
D. wireless
______has a inner conductor surrounded by a non-conductive dielectric insulating material.
A coaxial cable
B. A twisted pair cable
C. An optical fibre
D. A multiplexing
男子单打有58人,进行单淘汰赛。请问,该比赛的位置数为58个。
A. 对
B. 错
男子单打有58人,进行单淘汰赛。请问,该比赛最好先来一轮“抢号”的比赛。
A. 对
B. 错