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将单位内部的局域网接人因特网，最普遍的方式是通过（)，利用它连通不同的网络，并选择信息传送的线

将单位内部的局域网接人因特网，最普遍的方式是通过()，利用它连通不同的网络，并选择信息传送的线路。选择通畅快捷的近路，能大大提高通信速度，减轻网络系统通信负荷，节约网络系统资源，提高网络系统畅通率，从而让网络系统发挥出更大的效益。

A．集线器

B．中继转发器

C．路由器

D．防火墙

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第1题

What is the main problem that puzzles the readers of the novel？A．Dull story.B．Complex rela

What is the main problem that puzzles the readers of the novel？

A．Dull story.

B．Complex relationship.

C．Names.

D．Sad ending.

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第2题

What is the main problem that puzzles the readers of the novel？A．Dull story.B．Complex rela

What is the main problem that puzzles the readers of the novel？

A．Dull story.

B．Complex relationship.

C．Names.

D．Sad ending.

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第3题

What is the main problem that puzzles the readers of the novel？A．Dull story.B．Complex rela

What is the main problem that puzzles the readers of the novel？

A．Dull story.

B．Complex relationship.

C．Names.

D．Sad ending.

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第4题

What is the main problem that puzzles the readers of the novel？A．Dull story.B．Complex rela

What is the main problem that puzzles the readers of the novel？

A．Dull story.

B．Complex relationship.

C．Names.

D．Sad ending.

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第5题

What is NOT a problem when carrying coal ________．A.The requirement for through-ventilatio

What is NOT a problem when carrying coal ________．

A.The requirement for through-ventilation

B.The corrosion some types of coal will cause to the ship

C.Spontaneous heating

D.Generation of methane gas

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第6题

What is the main idea of this passage？A．Obesity is now a global problem that needs tacklin

What is the main idea of this passage？

A．Obesity is now a global problem that needs tackling.

B．The weights increase fast throughout the whole world.

C．Obesity and starvation are two main problems in the poor world.

D．Obesity has shifted from the rich world to the poor world.

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第7题

What is the main idea of this passage？A．Obesity is now a global problem that needs tacklin

What is the main idea of this passage？

A．Obesity is now a global problem that needs tackling.

B．The weights increase fast throughout the whole world.

C．Obesity and starvation are two main problems in the poor world.

D．Obesity has shifted front the rich world to the poor world.

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第8题

What is the main topic of this lecture？A．The process of fixing a photographB．The problem o

What is the main topic of this lecture？

A．The process of fixing a photograph

B．The problem of exposure time

C．The experiments by Louis Daguerre

D．The history of early photography

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第9题

According to David, what is the main problem for staff using computers now？A．The lack of I

According to David, what is the main problem for staff using computers now？

A．The lack of IT support.

B．The speed of their networks.

C．The need for more laptops.

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第10题

What is the main problem being discussed in the passage？A．The small Number of newborn babi

What is the main problem being discussed in the passage？

A．The small Number of newborn babies.

B．The changing social situation of women.

C．The high prices of houses and education.

D．The necessary steps of Asian governments.

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