相关试题
【判断题】
进行挥发份测定两次结果分别为15.46%和15.77%，其平均值为15.62%。
【判断题】
煤的挥发分不是煤中原来固有的挥发性物质。
【填空题】
1、测定煤中全水分时，对某煤样10g进行干燥后，其数据如下：9.80、9.75、9.76，则该煤样的全水分为 ___。
【填空题】
2、煤的全水分的测定应用的国标是___。
【填空题】
3、烟煤胶质层测定应用的国标是___。
【填空题】
4、挥发分测定后，坩埚中的残余物称为___，它的特征分为___种。
【填空题】
5、煤中全水分测定结果保留小数点后___位。
【填空题】
6、烟煤粘结指数测定应用的国标是___。
【填空题】
7、工业分析项目中的固定碳含量不是测定而是通过___得来的。
【填空题】
8、造成灰分测定误差的主要因素有黄铁矿的___、___和___。
【简答题】
影响粘结指数测定结果的因素有哪些？试验中应注意哪些问题？
【单选题】
世界上第一台电子数字计算机采用的电子器件是？
A. 大规模集成电路
B. 集成电器
C. 晶体管
D. 电子管
【单选题】
一个完整的计算机系统由硬件系统和_____两大部分组成。
A. 操作系统
B. 软件系统
C. 语言系统
D. 磁盘系统
【单选题】
操作系统是一种____。
A. 应用软件
B. 软件和硬件的统称
C. 数据库软件
D. 系统软件
【单选题】
windows中的任务栏____。
A. 可以在屏幕的四周放置
B. 只能在屏幕的底部放置
C. 只能在屏幕的右边放置
D. 只能在屏幕的左边放置
【单选题】
在菜单栏中某个命令暂时无效时，该命令应该___
A. 后跟“······”
B. 前有“”
C. 呈暗淡显示
D. 后跟三角形符号
【单选题】
在windows中 恢复被误删的文件应使用______
A. 计算机
B. 文档
C. 控制面板
D. 回收站
【单选题】
当前计算机已经应用于各种领域，而计算机最早的设计是应用于____
A. 数据处理
B. 科学计算
C. 辅助设计
D. 过程控制
【单选题】
下面关于对话框的叙述中，正确的是
A. 既不能移动 也不能更改大小
B. 只能移动 但不能改变大小
C. 对话框与窗口一样也有菜单栏
D. 对话框可以缩小成图标
【单选题】
要选择连续的若干个文件或文件夹，单击第一个文件或文件夹，按住 键，在单击最后一个文件或文件夹
A. alt
B. Shift
C. Enter
D. ctrl
【单选题】
在windows中，“桌面”是指
A. 某个窗口
B. 某个活动窗口
C. 全部窗口
D. 整个屏幕
【单选题】
在窗口中，单击“最小化”按钮后
A. 当前窗口被关闭
B. 当前窗口消失
C. 打开另一个窗口
D. 当前窗口在任务栏中缩小为图标后运行
【单选题】
要把当前窗口内容作为一幅图像复制到剪贴板，一般可按。 键
A. Shift➕printscreen
B. PrintScreen
C. ctrl➕printScreen
D. Alt➕Printscreen
【单选题】
通常所说的“裸机”是指计算机仅有。
A. 硬件系统
B. 软件
C. 指令系统
D. CPU
【单选题】
一般计算机系统中必不可少的输出设备是。
A. 软盘驱动器
B. 音箱
C. 显示器
D. 打印机
【单选题】
局域网的网络硬件主要包括服务器 工作站 网卡和。______
A. 计算机
B. 传输介质
C. 网络协议
D. 网络拓扑结构
【单选题】
Internet属于_____
A. 内部网
B. 局域网
C. 国际互联网
D. 公用电话网
【单选题】
下面 ____是政府部门的网站
A. http：//www.pku.edu.cn
B. http：//www.163.net
C. http://www.whitehouse.gov
D. http：//www.microsoft.com
【单选题】
Intermet使用的基本网络协议是
A. IPX/SPX
B. TCP/IP
C. NetBEUI
D. OST
【单选题】
在word中，在文本选择区单击鼠标，可选定
A. 一句
B. 一行
C. 一段
D. 整个文本
【单选题】
word中的段落标记符号是通过 产生的
A. 插入分页符
B. 按【Enter】
C. 插入分页符
D. 按【shift➕Enter】
【单选题】
1．在Word 2010的编辑状态下，打开了一个已有文档A l.doc，接着打开“文件”选项卡，在左侧单击“新建”命令，选择“新建空白文档”按钮，这时__________。
A. Al.doc被关闭
B. Al.doc和新建文档均处于打开状态
C. 新建 操作失败
D. 新建文档被打开但A1.doc被关闭
【单选题】
Word 中能显示页眉和页脚的视图方式是________
A. 普通视图
B. 页面视图
C. 大纲视图
D. Web版视图
【单选题】
Excel2010工作薄文件的扩展名约定为_____
A. DOX
B. XLS
C. XLSX
D. XLT
【单选题】
Excel中 按Delete键将清除被选区域中所以单元格的
A. 格式
B. 内容
C. 批注
D. 所有信息
【单选题】
在Excel单元格引用中 B5:E7包含
A. 2个单元格
B. 3个单元格
C. 4个单元格
D. 12个单元格
【单选题】
Excel图表是______
A. 工作表数据的图表表示
B. 根据工作表数据用画图工具绘制的
C. 可以用画图工具进行编辑
D. 图片
【单选题】
PowerPoint 2010文件的默认扩展名为___________
A. .docx
B. txt
C. xlsx
D. pptx
【单选题】
在PowerPoint中停止幻灯片的放映，应该按__________键
A. alt
B. Shift
C. Ctrl
D. Esc
推荐试题
【单选题】
- Can I help you? ____
A. Sorry, I don't need your help.
B. What help can you give us?
C. I'd like to try on these shoes, please.
D. Thanks. You are welcome.
【单选题】
- Sorry to have kept you waiting. ____
A. That's OK.
B. What are you doing?
C. What's wrong with you?
D. Where have you been?
【单选题】
- What is she?____
A. She is a typist.
B. She is talking to her friend.
C. She is having a holiday.
D. She is my sister.
【单选题】
- That's a beautiful cat. I wonder who it belongs to.____
A. It belongs to the
B. rowns. B.The cat is my favourite too.
C. Mind your own business.
D. I can't say anything more.
【单选题】
- Excuse me, could you tell me the time____
A. You'd better buy a watch.
B. It's three thirty by my watch.
C. Can you see the clock?
D. It's late I think.
【单选题】
- What do you think of the movie we saw last night?____
A. The actress is bad.
B. Terrific!
C. The theatre is bad.
D. Nobody was there.
【单选题】
___ No, thanks. I'm just looking around. I'll let you know if I want anything.
A. Could you help me?
B. What will you buy?
C. Can I help you?
D. Do you like to look around?
【单选题】
- Hello, Peter. What do you do?____
A. I am fine.
B. I am not sick.
C. I am a student from Bonn University.
D. I came from Bonn University.
【单选题】
-Excuse me; can I have a seat here?___
A. Be hurry.
B. Come on.
C. Yes, please.
D. Do you mind?
【单选题】
- Shall we sit up here on the grass or down there near the water?___
A. I'd rather stay here if you don't mind.
B. Sorry, I don't like neither.
C. Certainly, why not？
D. Yes, we like these two places.
【单选题】
- What do you do on Sunday?___
A. I 'm a teacher.
B. I play football.
C. You are a student.
D. They clean rooms.
【单选题】
- Our class won the girls' relay race in our school's sports meeting.___
A. That's right.
B. Thanks a lot.
C. Congratulations!
D. It's a pleasure.
【单选题】
- Hi, is Mary there, please?___
A. Hold on. I'll get her.
B. No, she isn't here.
C. Yes, she lives here.
D. Yes, what do you want?
【单选题】
- I am afraid I can't return the book to you before Friday. ___
A. Don't be afraid
B. Be careful
C. Not at all
D. Take your time
【单选题】
- I really don't know how to thank you enough. ___.
A. No problem
B. Think nothing of it
C. Not at all
D. It doesn't matter
【单选题】
- Must I be home before seven? ___.
A. No, you needn't
B. No, you mustn't
C. Yes, you will
D. No, you won't
【单选题】
-I'm sorry to hear that you failed in the exam______.
A. Not at all
B. Oh, thank you.That's very kind of you
C. You are welcome
D. Yes, I'm really sorry
【单选题】
-I will,______.
A. that's all right
B. thank you
C. all right
D. not at all
【单选题】
-Hello, may I speak to Zhao Hua?_____.
A. My name is Zhao Hua
B. I'm Zhao Hua
C. This is Zhao Hua speaking
D. Zhao Hua is me
【单选题】
___This is Mr Smith speaking now.
A. Who are you
B. Who is that
C. Who are you calling
D. What do you want to say
【单选题】
- I was worried about my maths, but Mr. Brown gave me an A.___
A. Don't worry about it.
B. Congratulations! That's a difficult course.
C. Mr. Brown is very good.
D. Good luck to you！
【单选题】
-Would you go to the concert with me?___, but I'm very busy now.
A. I'd like to
B. Sure
C. No problem
D. Certainly
【单选题】
-I'll be away on a business trip. Would you mind looking at my cat?Not at all. _______.
A. I have no time
B. I'd rather not
C. You can leave
D. I'd be happy to
【单选题】
- Hi, Jim! Nice to meet you.____.
A. Certainly
B. Many thanks
C. OK
D. Nice to meet you, too
【单选题】
- Hello, may I speak to Mike?_____
A. Who are you?
B. Sorry, he isn't in.
C. Thank you very much.
D. Yes, here you are.
【单选题】
- Will you join us for lunch?____.
A. No, I won't
B. Yes, with pleasure
C. Yes, please
D. Yes, help yourself
【单选题】
- Thank you for your great dinner. I really enjoyed it._____you enjoyed it.
A. I'm so glad
B. I'm sorry
C. What a pity
D. Surprisingly
【单选题】
- I heard Susan surprised her teacher by working hard. Yes, ___
A. her teacher worked hard.
B. Susan worked hard.
C. the teacher was surprising.
D. Susan was surprised.
【单选题】
- Peter, don't step on the grass_______.
A. It doesn't matter
B. I can't do it
C. Don't worry
D. Sorry, I won't do it again
【单选题】
- How was your journey to Paris? - ____
A. It went very well.
B. I flew there.
C. I love Paris.
D. Thank you for asking.
【单选题】
- I'm sorry for being late, Mr Lt______.
A. All right
B. That's right
C. Not at all
D. Never mind
【单选题】
- Happy birthday to you! ___!
A. Happy birthday to you
B. I'm very glad
C. That's all right
D. Thank you
【单选题】
- Do you like country music?___.
A. Yes, I like basketball a lot
B. It's far too crowded
C. Yes, I'm crazy about it
D. Oh, it's funny
【单选题】
- Have a cup of tea, ____? Thanks a lot.
A. don't you
B. haven't you
C. shall we
D. will you
【单选题】
- Thank God．It's Friday again．A nice weekend!___.
A. Me too
B. Yes，I'll be free then
C. That's all right
D. The same to you
【单选题】
— Write to me when you get home. OK, I ______.
A. must
B. should
C. will
D. can
【单选题】
Tom is so talkative. I’m sure you'll soon get tired ___ him.
A. of
B. with
C. at
D. on
【单选题】
I don't know ____ to deal with such matter.
A. what
B. how
C. which
D. /
【单选题】
___ is your girl friend like? She is very kind and good-looking.
A. How
B. What
C. Which
D. Who
【单选题】
He ___ driving me home, even though I told him I lived nearby.
A. insisted on
B. insisted at
C. insisted that
D. insisted in
