CD盘片和DVD盘片从外观上来看没有多大差别,但实际上DVD的存储容量比CD盘片大得

题型:填空题

问题:

CD盘片和DVD盘片从外观上来看没有多大差别,但实际上DVD的存储容量比CD盘片大得多。12cm的CD盘片的存储容量是650MB,而同样尺寸的DVD盘(单面单层)的容量是______GB。

考点:计算机等级考试PC技术三级PC技术笔试
题型:填空题

阅读短文,选择正确答案。

     Can you understand the beginning of this essay? 

     "My smmr hols wr CWOT. B4, we usd 2go2 NY2Cmy bro, his GF&3kds FTF." The Scottish teacher who

received it in class had no idea what the girl who wrote it meant .The essay was written in a form of English

used in mobile phone text messages. Text messages(also called short messages) through mobile phones became

very popular in the late 1990s .At first, mobile phone companies thought that text messaging would be a good

way to send messages to customers, but customers quickly began to use the text messaging service to send

messages to each other .Teenagers in particular enjoyed using text messaging , and they began to create a new

language for messages called texting.

     A text message is usually 160 characters (字节), including letters, spaces and numbers, so messages must

be kept short. In addition, typing on the small keypad of a mobile phone is difficult, so it's common to make

words shorter. In texting, a single letter or number can represent a word, like "r" for "are", "u" for "you", and

"2" for "to". Several letters can also represent a phrase, like "lol" for "laughing out loud". Another way of texting

is leaving out letters in a word, like spelling "please" as "pls".

     Some parents and teachers worry that texting will make children bad spellers and bad writers. The student

who wrote this essay at the top of this passage said writing that way was more comfortable for her. (The essay

said," My summer holidays were a complete waste of time.Before, we used to go to New York to see my

brother, his girl friend and their three kids face to face.")

     Not everyone agrees that texting is a bad thing. Some experts say languages always change. This is just

another way for English to change. Other people believe texting will disappear soon. New technology for voice

message may soon make text message a thing of the past.

1. What is the writer's opinion of text messaging? [ ]

A. It is fun and easy to do.

B. The writer does not give an opinion.

C. It is not bad for children.

D. It will make children bad writers.

2. Which way of texting is not described in this passage? [ ]

A. Using letters to represent words.

B. Using letters to represent phrases.

C. Using numbers to represent words.

D. Using phrases to represent essays.

3. Which is most probably the title of the student's essay? [ ]

A. My Gr8 Tchr

B. My GF

C. CU in LA

D. My smmr hols

4. Why do some people think that texting is bad? [ ]

A. It costs too much.

B. Children won't learn to write correctly.

C. It's too difficult to type.

D. It's not comfortable.

5. Why aren't some people worried about the effect texting? [ ]

A. Not many people use texting.

B. Children quickly become bored with texting.

C. Spelling in English is too difficult.

D. Texting will disappear because of new technology.

题型:填空题

往复式压缩机各分液罐中的凝液中含有()。

A、水

B、凝缩油

C、空气

D、蜡油

题型:填空题

采用实物法编制施工图预算,所用人工、材料和机械台班的单价是()。

A.历史价格

B.实际价格

C.预期价格

D.扣除通货膨胀后的价格

题型:填空题

当面对全新的问题情境时,问题解决者可以先仅仅是列出一些可能的方法,然后逐个地考虑这些方法是否能有效地解决问题的策略是()。

A.手段——目的分析

B.逆向搜索

C.生成——检验策略

D.类比策略

题型:填空题

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