在因特网用户接入中，所谓的“一线通”是 ______。_爱下问搜题

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问题填空题

在因特网用户接入中，所谓的“一线通”是 ______。

答案

参考答案：窄带ISDN(N-ISDN)

解析：窄带ISDN用在因特网接入中，即所谓的“一线通”，它把2B+D信道合并为一个144Kbps的数字信道，通过一个ISDN终端适配器TA，用户可以用144Kbps速率的完整数字信道访问因特网。

完形填空

完型填空。
     Look here, please! Can you see the man in black?   _1__ is Mr. Lee, my English teacher. He teaches (教) us __2  _ five days a week. He is a very good teacher. __3  _ is he? He's forty-five. He is __4  _
American. He has a car (小汽车).   _5__ yellow. Tom and Tim are   _6__ sons.   _7__ are in No.1
Middle School (一中). They can   _8__ Chinese,   _9__ they can't speak it well. Today they  _10__ at
school, because it is Sunday.

( )1. A. He
( )2. A. classes
( )3. A. What
( )4. A. a
( )5. A. Its
( )6. A. my
( )7. A. He
( )8. A. speak
( )9. A. and
( )10. A. are

  B. She
  B. English
  B. How
  B. an
  B. It's
  B. her
  B. They
  B. say
  B. but
  B. aren't

C. This
C. Chinese
C. How old
C. the
C. they're
C. his
C. We
C. tell
C. or
C. don't

多项选择题

施工组织设计按编制阶段不同可分为（）

A.初步施工组织设计

B.施工组织总设计

C.单位工程施工组织设计

D.实施性施工组织设计