自主检测2010

自主检测

一. 单项选择

( )1. Will you please stay here for the party?

Sorry. I___. I'll have to go to an important meeting.

A.mustn't

B.needn't

C.can't

D.won't ( )2.You can hardly imagine a man ________ friends with a volleyball.

A. make

B. making

C. to make

D. made

( )3. Please look over your paper carefully to ____ there are no mistakes.

A.find out

B.think of

C.make sure

D.try out

( )4. –Could you tell me how long _____ the book?

–A week.

A. can I borrow

B. I could borrow

C. could I keep

D. I can keep

( )5. We should keep eyes ____ while doing eye exercises.

A.closed

B. close

C. opened

D. open ( )6.There is something wrong with my DVD player. I'll have it ___.

A.to fix

B.fixing

C.fixed

D.fixes ( )7. We have so many kinds of guitars for you ________.

A. to choose

B. to choose from

C. to be chosen

D. to be chosen from

( )8. The students each __________hard on __________ lessons.

A. works; their

B. works; his

C. work; their

D. work; his

( )9. About _______ of the books in our school library are written in Chinese.

A. four-fifth

B. four-fifths

C. fourth-fifths

D. fourths-fifth

( )10. The smoke was so thick that I was having trouble _______.

A. to breathe

B. in breath

C. with breathing

D. breathing

二.完形填空

When the Americans were getting ready to send their first man to the moon，an old Irishman （爱尔兰人）was watching them on the television in the bar of a hotel．There was an Englishman in the bar，too，and he ___1____ the Irishman，“The ____2___ are very clever，aren’t they? They are going ___3____ some men to the moon．It is a long ____4___ from the world．”

“Oh，that’s ____5___，” the Irishman answered quickly．“The Irish are going to send some men to the sun in a few months．That’s ____6___ away from the moon，you know．”

“Yes，it is．” The English man said，“___7___ it is too ___8__ for the people to go to．”

The Irishman laughed and said，“Well，the Irish are n’t stupid，you know，we ____9___ go to the sun during the day，of course，we will go there

___10____．”

( ) 1．A．said to B．told C．talk to D．spoke to

( ) 2．A．Englishmen B．Americans C．Irish D．Frenchmen

( ) 3．A．to reach B．to send C．to give D．to rest

( ) 4．A．time B．street C．road D．way

( ) 5．A．Good B．Nice C．true D．nothing

( ) 6．A．long B．far C．farther D．much farther

( ) 7．A．and B．but C．or D．because

( ) 8．A．hot B．warm C．cold D．cool

( ) 9．A．don’t B．can’t C．won’t D．mustn’t

( ) 10．A．in the morning B．in the afternoon C．in the evening D．during the night

三.阅读理解

Mexico's neighbours are the United States to the north and Guatemala and Belize to the south. Mexico is about one quarter of the size of the United States. Mexico has more than ninety million people. The language of Mexico is Spanish. This makes Mexico the world's largest Spanish-speaking country.

Mexico City is the capital and largest city of Mexico. The city is also very high. It is 7349 feet high (2240 metres). This makes it one of the highest capital cities in the world. The population, of Mexico City grows bigger every day. About thirty million people live there. It has more people than any other city in the world, even more than Tokyo.

Mexico also has its specialities. Many of the foods we eat started in Mexico. Foods like beans, maize, avocados, tomatoes, peanuts, chili peppers, vanilla, and chocolate come from Mexico. Mexico is also famous for its cactus (仙人掌) plants. Mexico has more kinds of cactus than any other country.

( ) 1. Mexico is ____the USA.

A. on the south of

B. on the north of

C. a part of

D. as large as

( ) 2. Mexicans speak______.

A. English C. French

B. Spanish D. Latin(拉丁语)

( ) 3. Which of the following is NOT true?

A. Mexico City is the capital of Mexico.

B. The population of Mexico City is 30,000,000.

C. Tokyo is one of the cities with the largest population.

D. Mexico City is the highest city in the world. ( ) 4. Tomatoes were originally (最初) grown in

______.

A. America

B. Spain

C.

Tokyo D. Mexico

( ) 5. The best title (题目) of the passage is ___.

A. Mexico City

B. Mexico's plants

C.

Mexico D. Mexico's population

四.看中文写单词

1. The small town is becoming more and more _______

(拥挤的) and polluted.

2. Spring Festival is a _______________(特别

的)festival in China.

3. A large numbers of ___________ (移居者) will live

on the planet Mars by the year 2100.

4. Bill Gates __________________(开发)the BASIC

language for the first microcomputer.

5. __________(人类) on Mars have to wear special

boots to make themselves heavier.

6. _________________(四分之三)of the world’s books

and newspapers are written in English.

7. The big wind _______(扫) the leaves away here

already.

8. The _______ (售货员) said that they had sold the

clips out.

9. The bird ______（展开）its wings to fly away.

10.She went down on her _______（膝盖）to show her

sorry.

五.词形变换

1.My mother has just had her ______ birthday. (fifty)

2.Mr. Black said he _____________ us to the zoo the

next time. (take)

3.There will be ___________ no rain tomorrow.

(probable)

4.Life in the past

was___________________.(comfortable)

5.We saw a boat slowly to us. (come)

六.中译英

1. 对她来说有许多不同的吉他可以挑选。

There ________ many different _________ _______ ________ to ________ __________.

2 我不知道将来的生活会是什么样子的。

I don't know ______life ______ ______ _______

_______ the __________.

3. 地球的三分之二被水覆盖.

__________ ____________ of the earth ________ ________ _________ water.

4. 我可以在这儿吸烟吗?不,你不能,它可能很危险.

_____ I _________ here?

No, you ________ . It_____ _______ ______.

5．由于重力，对移居者来住在火星上将会有许多困难。

There _____ _______ many ________ for _________ ______ live _____ Mars because

_______ the gravity.

七.缺词填空

One day a poor farmer was taking a bag of wheat to town. Suddenly the bag fell from his horse onto the road.

He did not know w____________ to do about it because it was too heavy for him to lift by himself. He only hoped that someone would soon pass by and l_____________ him a hand.

Just at this moment a man r_________________ a

horse camp up to him. But the farmer’s heart went down when he saw who he was. It was the great man living n______________. The farmer had hoped to ask another farmer or a poor man like him to come along and help him. He couldn’t ask s_______________ a great man to help him. But to his s________________, the great man got off his horse as soon as he came nearer. He said to the farmer. “I see you n_____________ help, friend. How good it is that I’m here just at the right time.” Then he took one end of the bag, the farmer the other, they t_________________ raised it and put it on the horse.

“Sir”, asked the farmer, “How can I p____________ you?”

“It’s quite easy,” the great man replied with a smile.

“Wherever you see anyone e________________ in trouble, do the same for him.”

八.书面表达

假设你是李小龙，是“某某一中”的学生。请你围绕“建设和谐社会’’的主题，根据下面所给出的要点提示，用英语给全省中学生写一封倡议书。

要点提示：1．人与社会：祖国、家乡、学校，热爱关心

2．人与人：家人、师长、同学，诚信互助

3．人与自然：能源、环境、动植物，爱惜保护

4．你的态度：(内容由考生自己拟定)

Dear fellow students,

Our government is aiming to build a 'harmonious

society'. I think it is every citizen＇s duty to work hard to achieve th is goal.

As school students, what should we do?

_____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________________________________ _____________________

Li Xiaolong

答案:

一. 1．D2．B3．C4．D5．A6．C 7．D8．C9．B10．D

二. 1．A2．B3．B4．D5．D6．D 7．B8．A9．C10．D

三.1. A 2. B 3. D 4. D 5. C

四．1. crowded 2. special 3. settlers 4. has developed 5. Humans 6.Three-fourths 7, swept 8. salesmen 9. spread 10. Knees

五．1. fiftieth 2. would take 3. probably 4. less comfortable https://www.docsj.com/doc/da7990315.html,ing

六．1. Are/ guitars / for her / choose from

2. What / will be like in / future

3. Two thirds / is covered by

4. May / smoke / can't / may be dangerous

5. Are so / difficulties / settlers to / on / of

七. what, lend, riding, nearly, such, surprise, need, together, pay, else

八. First of all, we should love our motherland. Let’s take a great interest in the development of our hometowns and take an active part in our school and activities.

Secondly, let’s fill the world with love. We should show our respect for old people, our parents and our teachers. We should also care for each other and help those in need. More importantly, all of us must be faithful and honest in our daily life.

Finally, let’s work together to save energy and protect our natural environment, including animals, trees, flowers and grass.

As for myself, I will study even harder and try my best to do all the above.

Dear fellow students, let＇s start fight now and spare no effort/efforts to do a little bit every day, every hour, and every minute!

机器视觉检测的基础知识[大全]

机器视觉检测的基础知识~相机 容来源网络，由“机械展（11万㎡，1100多家展商，超10万观众）”收集整理！ 更多cnc加工中心、车铣磨钻床、线切割、数控刀具工具、工业机器人、非标自动化、数字化无人工厂、精密测量、3D打印、激光切割、钣金冲压折弯、精密零件加工等展示，就在机械展. 相机都有哪些种类？我们常说的CCD就是相机么？除了2D平面相机，是否还有其他种类的相机，原理又是什么？下面这篇文章给您一一道来。 一，相机就是CCD么？ 通常，我们把所有相机都叫作CCD，CCD已经成了相机的代名词。正在使用被叫做CCD的很可能就是CMOS。其实CCD和CMOS都称为感光元件，都是将光学图像转换为电子信号的半导体元件。他们在检测光时都采用光电二极管，但是在信号的读取和制造方法上存在不同。两者的区别如下： 二，像素。 所谓像素，是指图像的最小构成单位。电脑中的图像，是通过像素（或者称为PIXEL）这一规则排列的点的集合进行表现的。每一个点都拥有色调和阶调等色彩信息，由此就可以描绘出彩色的图像。 ▼例如：液晶显示器上会显示「分辨率：1280×1024」等。这表示横向的像素数为1280，纵向的像素数为1024。这样的显示器的像素总数即为1280×1024＝1,310,720。由于像素数越多，则越可以表现出图像的细节，因此也可以说「清晰度更高」。

三，像素直径。 所谓像素直径，是指每个CCD元件的大小，通常使用μm作为单位。严谨的说，这个大小中包含了受光元件与信号传送通路。（＝像素间距，即某个像素的中心到邻近一个像素的中心的距离。）。也就是说，像素直径与像素间距的值是一样的。如果像素直径较小，则图像将通过较小的像素进行描绘，因此可以获得更加精细的图像。可以通过像素直径和有效像素数，求出CCD元件的受光部的大小。 假设某个 CCD 元件的条件如下所示： ·有效像素数…768 × 484 ·像素直径…8.4 μm× 9.8μm 则受光部的大小为 ·横向768 × 8.4μm＝ 6.4512 mm ·纵向484 × 9.8μm＝ 4.7432 mm 四，CCD的大小。 ▼CCD感光元件的大小，一般分为采用英寸单位表示和采用APS-C大小等规格表示这2种方式。采用英寸表示时，该尺寸并不是拍摄的实际尺寸，而是相当于摄像管的对角长度。例如，1/2英寸的CCD表示「拥有相当于1/2英寸的摄像管的拍摄围」。为什么如此计算呢，这是由于当初制造CCD的目的就是用来代替电视机录像机的摄像管的。当时，由于想要继续使用镜头等光学用品的需求比较强烈，由此就诞生了这种奇怪的规格。主要的英寸规格的尺寸如下表所示。

潍坊中考英语试题及答案(word版)

2016年潍坊初中学业水平考试 九年级英语 注意事项： 1．本试题分第1卷和第Ⅱ卷两部分。第1卷75分，第Ⅱ卷45分，共120分，考试时间为120分钟； 2．答卷前务必将试题密封线内及答题卡上面的项目填涂清楚。所有答案都必须涂、写在答题卡相应位置，答在本试卷上一律无效。 友情提示：相信自己，祝你成功！ 第1卷（共75分） 一、听力测试（共25小题；每小题1分，满分25分） （一）听句子，选择适当答语，每个句子读两遍。 1. A. At 5:00 pm. B. You are so kind. C. Twice a week. 2. A. Thank you all the time. B. Sounds good. C. I don’t think so. 3. A. Yes, it’s on the second floor. B. Yes, it sells toys. C. No, there is a music area. 4. A. I don’t like it. B. Salad, please. C. I’ll take it. 5. A. No, you needn’t B. That’s very kind of you. C. Yes, you wouldn’t. （二）听句子，选择与句子内容相对应的图片，每个句子读两遍。 6. 7. 8. （三）听短对话，根据对话内容选择每个问题的最佳答案，对话和问题读 两遍。 9. Which does Lucy like better, fruit or bread A. Cake. B. Fruit. C. Bread. 10. Where is the woman going A. The supermarket. B. His new house. C. We don't know. 11. Who likes reading alone A. Jim. B. Mary. C. Sarah.

2018年山东省潍坊市中考英语试题及答案(word版)

2018年山东省潍坊市中考英语试卷 一、听力测试（每小题1分，共25分） 1．（1分）A．It's Lingling's． B．She is Langling． C．Lingling did it． 2．（1分）A．It's 50 yuan． B．It's 30 kilos． C．It's 27． 3．（1分）A．About 20． B．Around 5：00． C．At the street corner． 4．（1分）A．I think so． B．That's OK． C．Sorry to hear that． 5．（1分）A．I'm going to Shanghai Disneyland． B．I went to Hong Kong last year． C．I've never been to England． 6．（3分） （1）（2）（3） 7．（1分）How was the music just now？ A．It was light． B．It was silent． C．It was loud． 8．（1分）What does the woman want to have？

B．Coke． C．Tea． 9．（1分）Where is the bank？ 10．（1分）What is David？ A．A writer． B．A singer． C．An actor． 11．（1分）What did the man do？ A．Stayed at home． B．Travelled around． C．Went to the museum． 12．（1分）What was the weather like last night？A．Windy． B．Cloudy． C．Rainy． 13．（3分）（1）What did the woman buy finally？A．Some cakes． B．Some bread． C．Some bread and cakes． （2）How many cakes did the woman take away？A．10． B．15． C．20． （3）How much did the woman actually pay for each cake？A．6 yuan．

2018年潍坊中考英语试题及答案 (2).doc

2018年潍坊市初中学业水平考试 英语试题 二、单项选择 21. - What do you think of the boy? - He is ______ honest student today and ______ useful man tomorrow. A. a; an B. an; a C. an; an D. a; a 22. A little effort every day, you ______ a big difference. A. makes B. made C. have made D. will make 23. A good friend is someone you ______ share your pleasure and pain with. A. can B. need C. should D. must 24. –Why do you ______ Liu Hulan? - Because she is a great hero. A. look like B. look down C. look over D. look up to 25. – Shall we go to amusement park right away or the day after tomorrow? - ______. Any time will do. A. Excuse me B. Have a good time C. It’s up to you D. I’m afraid I can’t 26. –“Food Safety”has become one of the hottest topics recently. - Yeah, it receives ______ Internet hits a day. A. thousands B. thousands of C. thousand D. hundreds 27. - ______ is it from your home to your school? - It’s about 10 minutes’ ride. A. How long B. How soon C. How far D. How often 28. What kind of movies do you prefer? I prefer the movies ______ me something to think about. A.which give B. that gives

2018年潍坊市中考英语试题+答案+解析.doc

（五）听一段独白，根据所听内容补全下列文段。每空一词，独白读两遍。 Lisa, a 1 -year-old girl, goes to her father’s toy shop after school every 2 .On that day excited kids and babies are busy playing with the toys in their shop, so it’s always quite 3 there. Lisa has to watch carefully and make sure nobody 4 the toys. This often makes her feel 5 , but she has fun helping her father.

二、单项选择（共8小题；每小题1分，满分8分） 从下列各题所给的A、B、C、D四个选项中，选出可以填入空白处的最佳选项 21. To prepare for___________trip to LA, Betty is making___________list of things to take along. A. the: the B. 不填:a C. the: a D. a; 不填 22. Students here often do physics experiments___________small groups. A. by B. in C. for D. at 23.The Three Gorges Dam produces___________for millions of people in China. A. electricity B. influence C. transport D. technology 24. Doctor Bethune sometimes had to treat the wounded on___________own. A. him B. his C. them D. their 25.—I always hate being late for school. —____________ A. So am I. B. So do I C. So I am D. So I do 26 The photos that won the first prize in the competition will be___________on the website. A. put away B. put off C. put up D. put on 27. You will still miss the flight___________you catch a Didi car. A even if B. as if C. until D. before 28 We were all disappointed at___________. A. what does the boy Bay B what the boy says D what the boy said C. what did the boy say 三、完形填空（共10小题；每小题1分，满分10分） 阅读下面短文，掌握其大意，然后从A、B、C、D四个选项中选出最佳选项。 Riding a Mobike on the street, you might hear some people speaking Chinese aloud. urning to the right, you see a Sichuan-style restaurant. After walking into a store you see that Huawei smartphones are 29 . But you’re not in China—you’re in Manchester in Britain. In fact, you might see 30 things in many other cities. Chinese products have been 31 worldwide. Chinese food has been enjoyed in western countries for a long time. To 32 local peoples tastes, Chinese restaurants have made some changes to the 33 . Unlike Chinese, Australian people don’t like to eat meat with the bone 34 .So Chinese restaurants there provide big pieces of meat without bones, 35 for fish. Some Chinese brands（品牌）are also becoming more 36 . In many cities in Europe stores sell TCL televisions, Haier fridges and Lenovo computers. And more than half of US-owned drones （无人机）are Chinese models. They’re not simply made in China, but designed and developed in the 37 . In the past, most western people thought Chinese products were cheap and not dependable.

实验室检测基础知识

1、检验用水的要求 分析检验中绝大多数的分析是对水溶液的分析检测，因此水是最常用的溶剂。在实验室 中离不开蒸馏水或特殊用途的纯水，在未特殊注明的情况下，无论配制试剂用水，还是分析检验操作过程中加入的水，均为纯度能满足分析要求的蒸馏水或去离子水。蒸馏水可用普通 的生活用水经蒸馏汽化冷凝制成，也可以用阴阳离子交换处理的方法制得。特殊项目的检验 分析对水的纯度有特殊要求时，一般在检验方法中注明水的纯度要求和提纯处理的方法。 为保证纯水的质量能符合分析工作的要求，对于所制备的每一批纯水，都必须进行质量 检测。一般应达到以下标准： ①用电导仪测定的电导率小于或等于530卩s/cm(25C )。 ②酸度呈中性或弱酸性，PH=5.0~7.5(25C )?可用精密pH试纸、酸度计测定，也可用如 下指示剂法测定：在10 ml水中加入2~3滴1g/L甲基红指示剂，摇匀呈黄色不带红色，则说明水的酸度合格，呈中性；或在10 ml水中加入4~5滴1g/L溴百里酚蓝指示剂，摇匀不呈蓝色，则说明水的酸度合格，呈中性。 ③无有机物和微生物污染。检测方法为：在100 ml水中加入2滴0.1g/L高锰酸钾溶液 煮沸后仍为粉红色。 ④钙、镁等金属离子含量合格。检测方法为：在10 ml水样中加入2 ml氨-氯化铵缓冲 溶液(PH=10), 2滴5g/L铬黑T指示剂，摇匀。溶液呈蓝色表示水合格，如呈紫红色则表示 水不合格。 ⑤氢离子含量合格。检测方法为：在10 ml水样中加入数滴硝酸，再加入4滴10g/L 的AgNO3溶液，摇匀。溶液中无白色浑浊物表示水合格，如有白色浑浊物则表示水不合格。

2、检验用试剂的要求 ①标准试剂 标准试剂是用于衡量其他物质化学量的标准物质，通常由大型试剂厂生产，并严格按照国家标准进行检验，其特点是主体成分含量高而且准确可靠。 滴定分析用标准试剂，我国习惯称为基准试剂（PT），分为C级（第一基准）与D级（工作基 准）两个级别，主体成分体积分数分别为99.98~100.02%和99.95~100.05%, D级基准试剂是 滴定分析中的标准物质，基准试剂规定采用浅绿色标签。 ②普通试剂 普通试剂是实验室广泛使用的通用试剂，一般可分为三个级别，其规格和适用范围见下 表： 等级名称符号适用范围标志 一级优级纯GR精密分析、科研用，也可作基绿色 准物质 （保证试剂） 二级分析纯AR常用分析试剂、科研用试剂红色 三级 （分析试剂） 蓝色化学纯CR/CP要求较低的分析用试剂 普通试剂的规格和适用范围

医学检验《基础知识》试题(精品范文).doc

【最新整理，下载后即可编辑】 基础知识 一、A1 1、检测血糖时，实验室多采用血浆或血清而不使用全血的原因是 A、方便于同时检测其他生化指标 B、血细胞的糖酵解作用会使血中葡萄糖浓度降低 C、血细胞中的葡萄糖渗出使血中葡糖糖浓度升高 D、细菌污染使血中葡萄糖浓度升高 E、细菌污染使血中葡萄糖浓度降低 【正确答案】B 【答案解析】由于红细胞内的G-6-PD可促使葡萄糖的酵解从而使血糖浓度降低。 2、与试带法检测白细胞的原理有关的酶是 A、粒细胞酯酶 B、酸性磷酸酶 C、碱性磷酸酶 D、过氧化物酶 E、单核细胞酯酶 【正确答案】A 3、关于免疫耐受的描述，错误的是A、免疫耐受是机体对抗原刺激表现出的特异性"免疫不应答"现象 B、T细胞和B细胞都可发生免疫耐受 C、免疫耐受机体对任何抗原均不应答 D、免疫耐受具有特异性 E、中枢免疫耐受状态可持续终身 【正确答案】C 4、肾移植进行组织配型.优先考虑的是 A、AB0血型 B、HLA-DR C、HLA-DP D、HLA-A E、HLA-B 【正确答案】B 5、下列何种疾病使中性粒细胞和单核细胞的调理、吞噬和杀伤能力受损 A、慢性肉芽肿 B、髓过氧化物酶 C、G-6-PD缺乏症 D、Shwachman综合征 E、类白血病 【正确答案】A

【答案解析】慢性肉芽肿属原发性吞噬细胞功能缺陷，其中性粒细胞和单核细胞的调理、吞噬和杀伤能力受损。 6、属于Ⅲ型超敏反应的疾病是 A、过敏性支气管哮喘 B、新生儿溶血症 C、接触性皮炎 D、过敏性休克 E、系统性红斑狼疮 【正确答案】E 7、用密度梯度离心法分离的外周血单个核细胞，不含有 A、单核细胞 B、T细胞 C、B细胞 D、NK细胞 E、多形核粒细胞 【正确答案】E 8、补体系统活化替代途径激活物主要是 A、结合抗原后的IgG类抗体 B、结合抗原后的IgM类抗体 C、细菌细胞壁的脂多糖、酵母多糖 D、RNA E、双链DNA 【正确答案】C 9、免疫组化染色前.应对标本进行固定.固定最主要的目的是 A、保存组织细胞的抗原性 B、防止细胞脱落 C、防止细胞自溶 D、终止胞内酶的活性 E、使细胞内蛋白质凝固【正确答案】A 10、捕获法ELISA检测的Ig 类别是 A、IgM B、IgG C、IgA D、IgD E、IgE 【正确答案】A 11、临床监测药物浓度的首选方法是 A、时间分辨免疫荧光分析 B、荧光偏振免疫分析 C、免疫荧光显微技术 D、流式细胞术 E、免疫层析技术 【正确答案】B

2016年山东省潍坊市中考英语试卷有答案

英语试卷 第1页（共22页） 英语试卷 第2页（共22页） 绝密★启用前 山东省潍坊市2016年初中学业水平考试 英 语 (满分120分，考试时间120分钟) 第Ⅰ卷(共75分) 一、听力测试(共25小题；每小题1分，满分25分) (一)听句子，选择适当答语。每个句子读两遍。 1. A. It’s sunny B. It’s Monday. C. It’s 7:00. 2. A. It’s yellow. B. It’s new. C. It’s large. 3. A. 5 kilos. B. 35 yuan . C. 3 meters. 4. A. You’re welcome. B. It doesn’t matter. C. Sure, here you are. 5. A. It’s time to go home. B. Thanks for your help. C. I’d like to buy a present for my father. (二)听句子，选择与句子内容相对应的图片。每个句子读两遍。 6.________ 7.________ 8.________ A B C (三)听对话，根据对话内容选择每个问题的最佳答案。对话和问题读两遍。 9. What does the woman want to have? A. Some water. B. Some cakes. C. Some fruit. 10. Where is the man going? A.A hospital. B.A hotel. C.A bank. 11. What is the woman going to do on the weekend? A. Go fishing. B. Do some homework. C. Do some housework. 12. What does the woman’s sister look like? A. She’s got short hair. B. She’s got long hair. C. She’s p retty. 13. How will the man’s grandpa come here? A. By bus. B. By train. C. By plane. 14. What is the woman good at? A. Reading. B. Swimming. C. Playing football. (四)听对话，根据对话内容选择每个问题的最佳答案。对话读两遍。 听第一段对话，回答第15至17小题。 15. What was the man ten years ago? A. A postman. B. A policeman. C. A businessman. 16. When did the man come to China? A. In 2006. B. In 2013. C. In 2016. 17. What are they going to do the next day? A. Teach English in a college. B. Travel around the world. C. Have a trip in Beijing. 听第二段对话，回答第18至20小题。 18. How does the woman talk with the man? A. Over the phone. B. Through the Internet. C. Face to face. 19. What cannot the woman play? A. The piano. B. The guitar. C. The violin. 20. What music does the woman like best? A. The traditional western music. B. The rock music. C. The pop music. (五)听一段独白，根据所听内容补全下列句子。每空一词，独白读两遍。 1. More than ________ books are in City Library. 2. Books on ________ , history, science and technology are on the second floor. 3. On the right side of the third floor are books in ________. 5. You must keep the books ________ and return them on time. 二、单项选择(共10小题；每小题1分，满分10分) 从下列各题所给的A 、B 、C 、D 四个选项中，选出可以填入空白处的最佳选项。 21. —________ chocolate bread you want is done now. —What ________ delicious smell! A. A ；the B. A ；不填 C. The ；a D. The ；不填 -------------在 --------------------此-------------------- 卷-------------------- 上-------------------- 答-------------------- 题-------------------- 无-------------------- 效---------------- 毕业学校_____________ 姓名________________ 考生号________________ ________________ ___________

视觉检测基础知识

视觉检测的基础知识

内容概略： 一、光源 二、镜头 三、相机 四、分辨率、精度、公差间的关系

视觉检测的基础知识（一）光源 觉检测硬件构成的基本部分和光源相关的最重要的两个参数就是光源颜色和光源形状。2016-7A p o l工业机器视觉系统的前沿应用视 一、什么是颜色？ 颜色是通过眼、脑和我们的生活经验所产生的一种对光的视觉效应，我们肉眼所见到的光线，是由波长范围很窄的电磁波产生的，不同波长的电磁波表现为不同的颜色，对色彩的辨认是肉眼受到电磁波辐射能刺激后所引起的一种视觉神经的感觉。颜色具有三个特性，即色相，饱和度和明亮度。 ▼简单讲就是光线照到物体，反射到眼中的部分被大脑感知，引起的一种感觉。通过色相Hue，，饱和度Saturation和明亮度Value来表示，即我们常说的HSV。当然，颜色有不止一种表示方法，RGB三原色也是另外一种表示方法。但是对人类最直观感受的方式是HSV。 二，什么是HSV？ 色相Hue ▼如果将色彩分类，可分为含有颜色的有彩色与不含颜色的无彩色（黑、白、灰）两种。在有彩色中，红、蓝、黄等颜色的种类即称为“色相（Hue）”。

▼作为主要色相有红、黄、绿、蓝、紫。以这些色相为中心，按照颜色的光谱将颜色排列成环状的图形我们称之为“色相环”。使用此色相环我们即可求得中间色与补色。 饱和度Saturation ▼饱和度（Saturation）是指颜色的鲜艳度，表示色相的强弱。颜色较深鲜艳的色彩表示“饱和度较高”，相反颜色较浅发暗的色彩表示“饱和度较低”。饱和度最高的颜色称为“纯色”，饱和度最低的颜色（完全没有鲜艳度可言的颜色）即为无彩色。 明亮度Value ▼明亮度（Value）表示颜色的明暗程度。无论有彩色还是无彩色都具有明亮度。明亮的颜色表示“明亮度较高”，相反暗的颜色表示“明亮度较低”。无论有彩色还是无彩色，明亮度最高的颜色即为白色，明亮度最低的颜色即为黑色。也就是说，有彩色的明亮度可用与该亮度对应的无彩色的程度进行表示。

潍坊市2019年中考英语试题及答案

潍坊市2019年中考英语试题及答案 注意事项： 1.本试题满分90分，考试时间为90分钟； 2.答卷前务必将试题密封线内及答题卡上面的项目填涂清楚。所有答案都必须涂写在答题卡相应位置，答在本试卷上一律无效。 一、阅读理解（共15小题；每小题2分，满分30分） 阅读下列短文，从每题所给的ABCD四个选项中选出最佳选项。 A 1.The poster gives information about . A. the man teacher B. English courses C. language schools in London D. different activities in Lanleygate 2. How much do you have to pay for both Speaking and Writing ?

A. ￡95 B. ￡125 C. ￡155 D. ￡220 3. If Leo is free on Sunday afternoon ,he can . A. improve his listening ability B. join the possible smallest class C. have a native teacher D. Learn how to write in English B When he was a teenager ,Hunter Adams was very unhappy ,and he spent many years in the 1960s and 1970s hospital for people with mental(精神的) health problems . When he left hospital ,Adams decided to become a doctor ,so he went to Medical School in Virginia ,USA ,But when he was there he did things in a different way .For exam ple ,he didn’t like the doctor’s white coats .he preferred to wear shirts with flowers on them when he visited his patients ,and he tried to make them laugh .The doctors at the medical school didn’t like Adams very much because he was to different . But Adams believed that people in hospital need more than medicine .He saw unhappy and lonely people ,and he tried to help them as patients ,but as people too .He spent a lot of time with children in the hospital ,and often put a special red nose on his face to look like a clown and to make the children laugh . When he finished medical school and became a doctor , Adams opened his own hospital ,called “the Gesundheit Institute” ,together with some other doctors .They wanted it to be a place in a different way of working with sick people . Hunter Adams became famous during the 1980s ,and in 1998 ,Universal Pictures made a film about his life .It was very successful .In the film(called Patch Adams) ,Robin Williams played Adams .Williams said ,”Hunter is a really warm person ,who believes that patients need a doctor who’s friend .I enjoyed playing him .” 4. What probably made Hunter decide to be a doctor ? A. His interest in medicine B. His idea to open a hospital C. His early experience as a teenager D. His love for the lonely children around 5. How was Hunter different from other doctors ? A. He was famous before working in hospital B. He liked to wear shirts with flowers in them every day C. He treated his patients as friends in every way possible

实验室基础知识考试试题教学文案

实验室基础知识考试试题 姓名 _________ 分数 ________________ 一、填空题 1、一般化学试剂的品级有：一级试剂、二级试剂、三级试剂、四级试剂；国内标准名称: 2、 1%酚酞的配置方法是：将 酚酞溶于60ml 乙醇中，用水稀释至 ml,配置100ml 甲基橙所用甲基橙质量为 ，溶剂为 。 3、 配置500ml 1:1的氨水，所用浓氨水量为 ml,用蒸馏水量为 ml ； 500ml 1 : 1的盐酸，所用浓盐酸量为 ml,用蒸馏水量为 ml 。 4、 分析人员在进行称量试样的工作前，必须穿戴好工作服和白细纱手套。 称量 时，不宜化妆。 用电子天平称量时， 试剂或待测样易受空气中水蒸气的影响或试样本身具 有挥发性时，应采用 称量；待测样品为非吸湿或不一变质试样，可采取 称 量；要求准确称取某一指定质量的试样时，所采用的方法为 。 5、 待测的样品必须有样品标识，标识内容必须有样品的： 。 6、 分析室用水有三个级别，即一级水、二级水、三级水。用于一般分析化验的三级水可用 （ ）或 等方法制取。 7、 我国的安全生产方针是安全第一， ，综合治理。 8、 全国“安全生产月”是 _____ 月。 9、 一般灭火器材的使用方法是 ，按下压把，对住火焰根部喷射。 10、 新员工上岗应掌握的“三会”知识是：1）、会报警；2 ）、 ____________ ； 3）、会逃生自 救， 掌握各种逃生路线，懂得自我保护。 11、 大多数油料具有易发挥、易流失、 、易爆炸、 。 选择题 （20分，每小题2 分） 1、P507的化学名称为 2—乙基己基膦酸单一 2—乙基己基酯，分子式 QH 17OP （O ）C 8H 17OH 它 的分子量是（ ） ） B 、乙二胺四乙酸二钠 C 、二水合乙二胺四乙酸二钠 PH 值为5.5左右，其的质量百分含量为 （ ） A 5 B 、5% C 、20 D 、20% 4、 在测定稀土含量时，加入抗坏血酸主要是为了掩蔽（ ） A Fe 3+ B 、K C Ca 2+ D 、Cu 2+ <<<<<<精品资料》》》》》 A 204 、306 C 、405 D 、507 2、 EDTA 的化学名称是（ A 、乙二胺四乙酸 D 乙二胺四乙酸铁钠 3、 六次甲基四胺缓冲溶液

潍坊中考英语试卷PDF.pdf

2010年山东省潍坊市初中学业水平考试 英语试卷 1．本试题分第Ⅰ卷和第Ⅱ卷两部分。第Ⅰ卷75分，第Ⅱ卷45分，共120分，考试时间为120分钟： 2．请在答卷前先把自己的姓名、准考证号、考试科目和试卷类型涂写在答题卡上。考试结束时，试题和答题卡一并交回； 3．请将第Ⅰ卷选择题答案标号用2B铅笔涂在答题卡上，一定要看清题号并且涂得清楚。 第Ⅰ卷（共75分） 一、听力测试（共20小题；每小题1分，满分20分） （一）听句子，选择适当答语，每个句子读两遍。 1．A．I'm line．B．It's fine．C．He's fine． 2．A．Kind．B．De1icious．C．Funny． 3．A．Yes，I do．B．No, thanks．C．Sorry, I'm new here． 4．A．This is Betty speaking． B．Hold on，please． C．She is at home． 5．A．Yes，they are． B．Take it away, please． C．I'm sorry to hear that． （二）听对话和问题，选择符合每个问题答案的图面，每段对话和问题读两遍。 6． 7．

8． 9． 10． （三）听对话，根据对话内容选择每个问题的最佳答案，对话和问题读两遍。 听第一段对话，回答第11、12题。 11．In fact, what time did the man show his ticket? A．At 2：25．B．At 2：30．C．At 2：35．12．Why was the man late for the train? A．Because the train left earlier． B．Because he didn't know the time． C．Because there was something wrong with the clock． 听第二段对话，回答第13、14、15题。 13．Wh at’s wrong with Ann? A．She has a cold．B．She can't breathe．C．Her chest hurts．

机器视觉检测

研究背景： 产品表面质量是产品质量的重要组成部分，也是产品商业价值的重要保障。产品表面缺陷检测技术从最初的依靠人工目视检测到现在以 CCD 和数字图像处理技术为代表的计算机视觉检测技术，大致经历了三个阶段，分别是传统检测技术阶段、无损检测技术阶段、计算机视觉检测技术阶段。[] 传统检测技术 （1）人工目视检测法 （2）频闪检测法 无损检测技术 （1）涡流检测法 （2）红外检测法 （3）漏磁检测法 计算机视觉检测技术 （1）激光扫描检测法 （2）CCD 检测法 采用荧光管等照明设备，以一定方向照射到物体表面上，使用CCD摄像机来扫描物体表面，并将获得的图像信号输入计算机，通过图像预处理、缺陷区域的边缘检测、缺陷图像二值化等图像处理后，提取图像中的表面缺陷的相关特征参数，再进行缺陷图像识别，从而判断出是否存在缺陷及缺陷的种类信息等。 优点：实时性好，精确度高，灵活性好，用途易于扩充，非接触式无损检测。 基于机器视觉的缺陷检测系统优点： 集成化生产缩短产品进入市场时间改进生产流程 100%质量保证实时过程监控提高产量精确检测 100%检测 由于经济和技术原因国内绝大多数图像处理技术公司都以代理国外产品为主，没有或者很少涉足拥有自主知识产权的机器视觉在线检测设备，对视觉技术的开发应用停留在比较低端的小系统集成上，对需要进行大数据量的实时在线检测的研究很少也很少有成功案例，但是随着国内经济发展和技术手段不断提高对产品质量检测要求就更高，对在线检测设备的需求也就更大具有巨大的市场潜力。 机器视觉图像处理技术是视觉检测的核心技术 铸件常见缺陷：砂眼气孔缩孔披缝粘砂冷隔掉砂毛刺浇不足缺陷变形 问题的提出： 1.水渍、污迹等不属于铸件缺陷，但由于其外观形貌与缺陷非常类似, 因此易被检测系统误识为缺陷。从目前发表的文献来看，对于伪缺陷的识别率较低。 2.不同种缺陷之间可能存在形状、纹理等方面的相似性，造成缺陷误判。 国外研究发展现状： 20 世纪 90 年代后，基于机器视觉检测系统的自动化功能和实用化水平得到了进一步的提高。 1990 年芬兰Rautaruukki New Technology公司研制了Smartivis表面检测系统[]，该系统具有自学习分类功能，应用机器学习方法对决策树结构进行自动设计优化。 1996 年美国Cognex公司研发了一套iLearn自学习分类器软件系统并应用于其研制了iS-2000 自动检测系统。通过这两套系统的无缝衔接，极大地提高了检测系统实时的运算速度，有效的改进了传统自学习分类方法在算法执行速度、数据实时吞吐量、样本训练集规模及模式特征自动选择等方面的不足之处[]。 2004 年Parsytec公司发布了新一代表面质量检测产品Parsytec5i，该系统运用了自学习

潍坊市中考英语试题及答案

潍坊市中考英语试题及答案 以下是给你推荐的中考英语试题及答案，希望对你有帮助!潍坊市中考英语试题第1卷(共75分)一、听力测试(共25小题;每小题1分，满分25分)(一)听句子，选择适当答语，每个句子读两遍。 1. A. At 5:00 pm. B. You are so kind. C. Twice a week. 2. A. Thank you all the time. B. Sounds good. C. I don’t think so. 3. A. Yes, it’s on the second floor.B. Yes, it sells toys.C. No, there is a music area. 4. A. I don’t like it. B. Salad, please. C. I’ll take it. 5. A. No, you needn’t B. That’s very kind of you. C. Yes, you wouldn’t.(二)听句子，选择与句子内容相对应，每个句子读两遍。 (三)听短对话，根据对话内容选择每个问题的最佳答案，对话和问题读两遍。 9. Which does Lucy like better, fruit or bread?A. Cake. B. Fruit. C. Bread.10. Where is the woman going?A. The supermarket. B. His new house. C. We don't know.11. Who likes reading alone?A. Jim. B. Mary. C. Sarah.12. Whose birthday is it?A. Bob's. B. Julia's. C. John's.13. Why is snow bad news for the man?A. He can't go home. B. He lost his hat and gloves.C. He does not have his hat and gloves with him.14. What are they talking about?A. Tim’s family photo. B. Tim’s younger brother. C. Tim’s twin sister.(四)听长对话，根据对话内容选择每个问题的最佳答案，对话和问题读两遍。