【单选题】【消耗次数：1】
下列（ ）不是帧中继技术的描述。
①
是随着传输介质和分组技术的发展而兴起的一种新型的数据传输方式
②
采用数据报方式传送
③
是为满足局域网互联所需要的大容量传送和用户对数据传输延迟小的要求而开发的
④
属于快速分组交换技术的一种
参考答案：
复制
纠错
相关题目
【单选题】
( )是通用分组无线服务技术的简称，它是GSM移动电话用户可用的一种移动数据业务，属于第二代移动通信中的数据传输技术。
①
PDH
②
SDH
③
GPRS
④
CDMA
【单选题】
在采用DMA 方式高速传输数据时，数据传送是（）
①
在总线控制器发出的控制信号控制下完成的
②
在DMA 控制器本身发出的控制信号控制下完成的
③
由CPU 执行的程序完成的
④
由CPU 响应硬中断处理完成的
随机题目
【单选题】
— I hear ___ your grandpa ___ your grandma like watching Min Opera. — Right, just as many old people do in Fuzhou.
①
?both; and
②
?either; or
③
neither; nor
④
?not only; but also
【单选题】
Many teenagers have hobbies. But sometimes these hobbies can get ___ of schoolwork.
①
?on the way
②
?in the way
③
? by the way
④
?out of the way
【单选题】
I ___ go to bed until I ___ finished my work last night.
①
don’t; had
②
didn’t; have
③
didn’t; had
④
don’t; have
【单选题】
—Look, someone is coming. Guess who it ___ be?—I think it ___ be Tom.—I don’t think it ___ be ___.
①
?must; can; must; his
②
?may; can; must; him
③
?can; must; can; him
④
?might; must; can; himself
【单选题】
I was told yesterday that the company ___ me to Rome next week for a business conference.
①
?should have sent
②
?was going to send
③
?should be sending
④
?should send
【单选题】
If it is fine tomorrow, we ___ a football match.
①
have
②
will have
③
has
④
shall has
【单选题】
I went to the doctor’s yesterday. I had to wait for half an hour before he ___ see me.
①
?can
②
?may
③
?might
④
?could
【单选题】
If they ___ to do this work, he might do it some other way.
①
were
②
should
③
will
④
can
【单选题】
He was a good swimmer so he ___ swim to the river bank when the boat sank.
①
could
②
might
③
should
④
was able to
【单选题】
No sooner ___ he arrived home than he ___ to start on another journey.
①
has; was asked
②
have; were asked
③
had; is asked
④
had; was asked