关于电子邮件,下面的说法不正确的是( )。A.发送电子邮件时,通讯双方必须都在场

题型:单项选择题

问题:

关于电子邮件,下面的说法不正确的是( )。

A.发送电子邮件时,通讯双方必须都在场

B.电子邮件比人工邮件传送更方便、快捷

C.电子邮件可以同时发送给多个用户

D.在一个电子邮件中,可以发送文字、图像、语音等信息

考点:计算机等级考试网络技术三级网络技术笔试
题型:单项选择题

禁止流通物和限制流通物都不能作为拍卖标的。()

题型:单项选择题

下面的调查方法属于概率抽样调查的有( )

A.整群抽样

B.分层抽样

C.简单随机抽样

D.滚雪球抽样

题型:单项选择题

Astronauts on shorter shuttle missions(使命)often work very long days.  Tasks are scheduled so tightly that break times are often used to finish the day’s work.  This type of schedule is far too demanding for long missions on the International  Space Station(ISS).  ISS crewmembers usually live in space for at least a quarter of a year. They work five days on and two days off to mimic the normal way they do things on Earth as much as possible . Weekends give the crew valuable.  Weekends give the crew valuable time to rest and do a few hours of  housework.  They can communicate with family and friends by email , internet phone and through Private video conferences.

While astronauts cannot go to a baseball game or a movie in orbit, there are many familiar activities that they can still enjoy . Before a mission.  The family and friends of each ISS crewmember put together a collection of family photos, messages, videos and reading material for

The astronauts to look at when they will be floating 370 kilometers above the Earth.  During their mission, the crew also receives care packages with CDs, books, magazines, photos and letters . And as from early 2010, the internet became available on the ISS , giving astronauts the chance to do some “web surfing (冲浪)”in  their personal time.  Besides relaxing with these more common entertainments, astronauts can simply enjoy the experience of living in space.

Many astronauts say that one of the most relaxing things to do in space is to look out the window and stare at the universe and the Earth’s vast land mass and oceans.

小题1:What does the word “mimic ”in Paragraph 1 probably mean?

A. Find

B. Copy

C.Change

D.Lose小题2:Which of the following best describes the families of the astromauts on the ISS ?

A. The are caring and thoughtful.

B. The are impatient and annoyed.

C. The are impatient and annoyed.

D. The are excited and curious.小题3:In the final paragraph, the author shows that astronauts          .

A. get more pleasure in space than on the Earth

B. find living in space a bit boring and tiring

C. regard space life as common

D. love to see the Earth from space小题4:The passage mainly discusses how astronauts          .

A. work for longer missions in space

B. connect with people on the Earth

C. observe the Earth from space

D. spend their free time in space

题型:单项选择题

在Word2000的编辑状态下改变文档的字体,下列叙述正确的是()。

A.文档选中的部分字体发生变化

B.光标之后的文档字体发生变化

C.整个文档字体发生变化

D.光标之前的文档字体发生变化

题型:单项选择题

某口腔修复科技师在第一次使用高频离心铸造机时,在铸造过程中发现铸造机全机抖振,造成这一现象最可能的原因是

A.离心转速减慢

B.铸圈未放置好

C.配重不良

D.铸造室门盖未盖好

E.感应加热器未推到位

更多题库