Put on your chipping ()when chipping and scraping.

题目
单选题
Put on your chipping ()when chipping and scraping.
A

goggles

B

glasses

C

goggle

D

hammer

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相似问题和答案

第1题:

There are many inconveniences that have to be_________ when you are camping.

A. put up with

B. put down to

C. put off

D. put away


正确答案:A
put up with的意思是“忍受,容忍”;put down to的意思是“把……归因于”;put off的意思是“关掉,敷衍,去掉”;put away意思是“把……放好,储存,放弃”。题干的意思是:“野营的时候有许多不便之处是必须忍受的。”

第2题:

When they have ( )that new building, it will spoil the view.

A.put off

B.put on

C.put up

D.put down


参考答案:C

第3题:

Sally, _____ your sunglasses. The sun is so bright.

A. put on B. put up C. put away D. put down


正确答案:A

第4题:

Don t just try to () your toothache. Go and see the dentist.

A、put up

B、put out

C、put through

D、put up with


参考答案:D

第5题:

It is cold outside.___your coat.

A.Put on

B.Put in

C.Put down

D.Put off


正确答案:A

第6题:

"Open your exercise books and ( )the following," the teacher said.

A.put down

B.put on

C.put off

D.put up


参考答案:A

第7题:

Close your books and( )them__________.

A.put...off

B.put...on

C.put ...down

D.put...away


参考答案:D

第8题:

How do you show your interest in the job when your interview is about to be put an end?

A.Raise questions about the employer or job.

B.Express your thanks to the interviewer(s).

C.Try to establish contact with the interviewer(s).

D.Restate your interest to the interviewer(s).


参考答案:A

第9题:

Don 't forget to () your seat belt when you 're driving.

A. put up

B. put off

C. put on


参考答案:C

第10题:

CDMA for cellular system can be described as follows. As with FDMA, each cell is allocated a frequency (71) , when is split into two parts, half for reverse (mobile unit to base station) and half for (72) (base station to mobile unit). For full-duplex (73) , a mobile unit both reverse and forward channels. Transmission is in the form. of direct-sequence spread (74) , which used a chipping code to increase the data rate of the transmission, resulting is an increased signal bandwidth. Multiple access is provided by assigning (75) chipping codes to multiple users, so that the receiver can recover the transmission of an individual unit from multiple transmissions.

A.ware

B.signal

C.bandwidth

D.domain


正确答案:C
用于蜂窝系统的CDMA技术可以描述如下。就像FDMA一样,每一个小区被分配了一个频带,该频带划分为两半,一半用于反向信道(从移动终端到基站),一半用于正向信道(从基站到移动终端)。在全双工通信中,移动终端使用了反向和正向两个信道。传输以直接序列扩频方式进行,用一个码片来增加传输的数据速率,同时也产生了额外的信号带宽。通过把正交的各个码片指定给不同的用户就可以实现多路访问,这样接收者就能够从多个传输中提取并恢复需要的传输单元。

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