There was such a long time at the exhibition()we had to wait for about half an hour。

第1题

LON网络最显著的特点是()

A.开放性

B.互操作性

C.通信媒介

D.网络结构

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第2题

Which one of the following sentences is correct？A.Seldom has a witness held the stand f

A.Seldom has a witness held the stand for so lon

B.Seldom a witness has held the stand for so lon

C.Usually has a witness held the stand for so lon

D.Often has a witness held the stand for so lon

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第3题

stand-alone/'stændə,lon/（）

A.独立的

B.独立经营的

C.立法的

D.剂量

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第4题

变电站的综合自动化系统的系统的网络结构主要类型有()。

A.光纤型

B.总线型

C.基于LON网络结构

D.星形

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第5题

由两个Neuron芯片组成，用来连接不同通信媒介的LON网络是()

A.LonWorks收发器

B.LonWorks路由器

C.LonWorks控制模块

D.LonWorks网络接口和网间接口

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第6题

The report should be ready tomorrow morning. You'd better__________ too long.A.don

A.A. You'd better__________ too lon

B.B.don't put it off

C.C.not put it off

D.D.not to put it off

E.E.to not put it off

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第7题

The phrase "toll-free numbers" means______.A．an area codeB．a telephone serviceC．a free lon

The phrase "toll-free numbers" means______.

A．an area code

B．a telephone service

C．a free long distance call

D．WATS

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第8题

Rail transport plays more or less the same role as（) in the domestic economy of a country. A. lon

A.A. long haul

B.B. short haul

C.C. carriage of goods by road

D.D. road transport

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第9题

Anyone can get into the club,______he is a member there.A．even ifB．unlessC．as thatD．so lon

Anyone can get into the club,______he is a member there.

A．even if

B．unless

C．as that

D．so long as

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第10题

One cause of eyestrain mentioned in the passage is ______.A．wearing contact lenses too lon

One cause of eyestrain mentioned in the passage is ______.

A．wearing contact lenses too long

B．going to the movies

C．reading a lot

D．not visiting your eye doctor

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第11题

Howard seized Gordon with both his hands____he Appeared in the strt？et,A.each timeB.as lon

Howard seized Gordon with both his hands____he Appeared in the strt？et,

A.each time

B.as long as

C.the moment

D.not until

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