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弯弯的森林小道上，守林人停下来，把我领到一棵参天的古树边，用深沉的眼光在告诉我什么，于是，我抬起头。我突然惊讶地发现原来这是一棵刚刚遭到雷火劈伤的古树，______。那些冷冷的光秃秃的枝桠伸向天空，好像在寻找着什么…… 填入上面语段中横线部分的句子，与上下文衔接最好的一项是()。

A.树枝丢失了一大半，树顶被削去了，只剩下粗大的树干和一些枝桠

B.树顶被削去了，树枝丢失了一大半，只剩下粗大的树干和一些枝桠

C.只剩下粗大的树干和一些枝桠，树顶被削去了，树枝丢失了一大半

D.树枝丢失了一大半，只剩下粗大的树干和一些枝桠，树顶被削去了

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更多“弯弯的森林小道上，守林人停下来，把我领到一棵参天的古树边，用…”相关的问题

第1题

● （66) is a channel's capacity which directly reflects the data transfer rate of the chann

● (66) is a channel's capacity which directly reflects the data transfer rate of the channel. (67) functions in a NetWare network which is used to define addressing schemes. (68) is a network layer device that suports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains. (69) 。is the popular LAN develped under the direction of the IEEE 802.3. (70) is a device which enables digital microcomputers to communicate across analog telephone lines.

(66) A．The volume

B．The bandwidth

C．The noise

D．The delay

(67) A．NetBEUI

B．IP

C．IPX

D．NCP

(68) A．The repeater

B．The hub

C．The bridge

D．The router

(69) A．Token Ring

B．Token Bus

C．Ethernet

D．FEEI

(70) A．The repeater

B．The modem

C．The hub

D．The printer

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第2题

is a channel's capacity which directly reflects the data transfer rate of the channel

A．The delay

B．The volume

C．The noise

D．The bandwidth

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第3题

______ is a channel's capacity which directly reflects the data transfer rate of the chann

e1.

A．The volume

B．The bandwidth

C．The noise

D．The delay

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第4题

Suppose that two channels are to be connected end to end to forma composite channel. Each of the ori

ginal channels is a binary symmetric channel with crossover probabilityε．Suppose that the output of the first channel is connected directly to the input of the second. What is the capacity of the composite channel？

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第5题

Suppose that two channels are to be connected end to end to forma composite channel. Each of the ori

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第6题

is a channel's capacity which directly reflects the data transfer rate of the channe1.

(2) functions in a NetWare network which is used to define addressing schemes.

(3) is a network layer device that supports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.

(4) is the popular LAN developed under the direction of the IEEE802.3.

(5) is a device which enables digital microcomputers to communicate across analog telephone lines.

A．The volume

B．The bandwidth

C．The noise

D．The delay

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第7题

With 0，1，as both input and output，the transition probabilites for 0 to 0 and 1 are 1-ε

and ε respectively while those for 1 to 1 and 0 are 1-δ and δ respectively．Assuming that 0<ε<1 and 0<δ<1，find the capacity of the channel．

Suppose that the output of the first channel is connected directly to the input of the second with no processing between： What is the capacity of the composite channel？

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第8题

is a channel' s capacity which directly reflects the data transfer rate of the channel

.(67)functions in a NetWare network which is used to define addressing schemes.(68)is a network layer device that suports multiple LAN interfaces and segments LANs into smaller collision and broadcast domains.(69)．is the popular LAN develped under the direction of the IEEE 802.3.(70)is a device which enables digital microcomputers to communicate across analog telephone lines.

A．The volume

B．The bandwidth

C．The noise

D．The delay

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第9题

Distribution channel is a way of selling a company's product either directly or via distributors.

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第10题

According to Shannon's equation,what is the channel capacity of an analog voice-grade phon

According to Shannon's equation, what is the channel capacity of an analog voice-grade phone line with a bandwidth of 3100 Hz and a signal-to-noise ratio or 30 dB？

A．9.1 Kbps

B．9.3 Kbps

C．30.9 Kbps

D．30.17 Kbps

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