新一练习题L79-80
2024年高压电工新版试题及答案

2024年高压电工新版试题及答案1、【单选题】在三相交流电路中,负载消耗的总有功功率等于()O(B)A、各相有功功率之差B、各相有功功率之和C、各相视在功率之差2、【单选题】在中性点经消弧线圈接地系统中,当系统发生单相接地时,接地电容电流与消弧线圈电流(),在接地点相互补偿,使接地电流减小。
(C)A、相差90°B、方向相同C、方向相反3、【单选题】电力生产的特点是()、集中性、适用性、先行性。
(C)A、统一性B、广泛性C^同时性4、【单选题】过负荷保护主要用于反应OkVA及以上变压器过负荷。
(八)A、400B、315C、6305、【单选题】DH型自动重合闸继电器中的充电电阻起什么作用Oo(B)A、防止烧坏电容B、限制充电速度C、防止开关误合闸D、防止开关误跳闸6、【单选题】PLC编程时,子程序可以有()个。
(八)A、无限B、三C、二D、—7、【单选题】RW3-10型户外高压熔断器作为小容量变压器的前级保护安装在室外,要求熔丝管底端对地面距离以()米为宜。
(D)A、3B、3.5C、4D、4.58、【单选题】一正弦交流电的有效值为10A,频率为50HZ,初相位-30。
,它的解析式为()(C)A、i=10Sin(314t+30o)AB、i=10Sin(314t-30o)AC、i=10√2Sin(314t-30o)AD、i=10√2Sin(50t+30o)A9、【单选题】三相异步电动机的机械特性曲线是()。
(B)A、T=f(s)B、T=f(n)C、u=f(I)D、u=f(n)10、【单选题】下列()触发方式不属于可控硅触发电路。
(B)A、大功率三极管触发B、大功率二极管触发C、脉冲触发D、集成电路触发11、【单选题】下列()触发方式不属于可控硅触发电路。
(八)A、大功率二极管触发B、磁放大器触发C、单结晶体管触发D、正弦波同步触发12、【单选题】下列数据中,属于用电特性指标的资料数据是()。
(C)A、月平均负荷B、最大负荷利用小时数C、日负荷率D、负荷逐月变化曲线13、【单选题】与铝导线相比,下列不属于铜导线优点的是()。
新一第79-80课

5. money n. 钱 (不可数名词)
I have lots of money.
change 零钱 (不可数名词) coins 硬币 (可数名词) notes 纸币(可数名词)
I only want my change.
6. chemist n. 药剂师
Chinese 语文 Math 数学 English 英语 physics 物理 chemistry 化学 biology 生物 computer 计算机 P.E. 体育 geography 地 理 art 艺术 music 音乐 politics 政治 history 历史
把下列时间表达出来
1:00 8:35 5:20 1:55 7:30 10:45 9:15 6:40
用适当的介词填空
1. Children get gifts ____ Christmas and ____ their birthdays.
2. A lot of students in our school were born ____ March, 1981.
Learn the text
1. need 做实义动词/ 行为动词
need sth / want sth
need to do sth / want to do sth
Must I eat up the cakes? Yes, you must. No, you needn't.
What do we need?
Lesson 79 Carol’s shopping list 卡罗的购物单
教学
目标: a lot of ,many, much 的用法
教学重难点: need , have got 的用法 考试 考点: a lot of ,many, much 的用法
新概念英语第一册 Lesson79-80 (带答案)(共25张PPT)

Text: Carol’s shopping list
Q: What is Carol not going to buy?
Text: Carol’s shopping list
TOM: What are you doing, Carol? CAROL: I’m making a shopping list, Tom. TOM: What do we need? CAROL: We need a lot of things this week.
猜猜看以下钱? lucky money 压岁钱 Pig bank 右边的是什么?
Vocabulary
(8) groceries n. 食品杂货. grocer 杂货店店主
grocery = grocery store 杂货店
Vocabulary
(9) fruit n. 水果 蔬果 vegetables and fruits fruit 果肉 皮 skin 核 stone
to do。
e.g. 我需要一杯水。I need a glass of water.
他不需要重复做了。He doesn’t need to do it again.
•need作为情态动词,多用于否定疑问句,没有数的 变化,后面加动词原形。
e.g. 你不需要重复做了。You needn’t do it again.
•试一试:
Yoyo,你有很多书吗? Yoyo, do you have many books?
是的,我有很多书。 Yes, I do.\ I have many bo to the greengrocer’s. We haven’t got many tomatoes, but we’ve got a lot of potatoes.
初中物理选择题集锦

初中物理选择题集锦初中物理选择题集锦1、下列说法中错误的是()A、当汽车突然刹车时,乘客会向前倾倒,这是惯性的缘故。
B、汽车的动能与运动速度成正比。
C、力可以改变物体的运动状态。
D、起重机的钢丝绳吊着重为2000N的货物匀速上升时,钢丝绳对货物的拉力大于2000N。
2、用力踢足球,球在地面上滚动的过程中,受到的力是()A、脚踢足球的力、地面的磨擦力、重力和地面的支持力。
B、地面的磨擦力、重力和地面的支持力。
C、重力和地面的支持力。
D、地面的磨擦力、重力和地面的支持力。
3、下列几种估测中,比较符合实际情况的是()A、声音在空气中的传播速度大约是340m/s。
B、淋浴时让人感到舒适的水温约是40℃。
C、中学物理课本的长度大约是20cm。
D、家用节能灯的功率大约是10W。
4、如图1所示,中弹簧测力计的重力不计,滑轮光滑,物体都处于静止状态,则弹簧测力计的示数为()A、3N。
B、5N。
C、8N。
D、13N。
5、一个物体受到两个力的作用,如果这两个力的三要素完全相同,则此二力()A、一定是平衡力。
B、一定不是平衡力。
C、一定是一对相互作用力。
D、一定使物体处于平衡。
6、下列说法正确的是()A、物体运动速度越大,惯性越大。
B、放在水平面上的物体受到重力和支持力的作用。
C、物体受到力的作用,它的运动状态一定要改变。
D、磨擦总阻碍物体的运动。
7、自行车的轮胎有凹凸不平的花纹,是为了()A、增大接触面积,增大磨擦。
B、增大接触面的粗糙程度,增大磨擦。
C、减小接触面积,减小磨擦。
D、减小接触面的粗糙程度,减小磨擦。
8、我国交通法规规定,坐在小型客车前排的驾驶员和乘客都必须在胸前系上安全带,这主要是为了减轻下列哪种情况下可能对人造成的伤害()A.紧急刹车。
B.突然启动。
C.车速太快。
D.车速太慢。
9、如图2所示的情形中,二力能平衡的是()10、书放在水平桌面上,下列几种情况属于平衡力的是()A.书受到的重力和书对地球的吸引力。
新概念英语第一册练习Lesson 79-80(无答案)

新概念英语第一册练习Lesson 79-80(无答案)一单词拼写1.购物_______________________2.单子________________________3.食品杂货____________________4.蔬菜________________________5.屠夫________________________6.希望________________________7.文具________________________8.需要________________________9.大量学生____________________ 10.化学家_____________________ 二选择( )1. So _____ homework really makes the students feel tired.A. muchB. manyC. little( )2. ---Shall we stop and have ____ tea now?---Great.A. anyB. someC. little( )3. ---Must I finish that work today?---No, you ___. You may finish it in three days.A. mustn’tB. needn’tC. don’t( )4. ---Do you like this red car?---No, ___.A. not soB. not at allC. not all( )5. I must go to the ____ to buy some meat.A. butchersB. butcher’sC. butcher( )6. Are there____ computer companies in your hometown?A. a lotB. manyC. lot of( )7. There isn’t ____ mineral water left. We have to buy another bottle.A. a lot ofB. muchC. lots of( )8. If you don’t like sugar, ____ some chocolate?A. what aboutB. what ifC. that( )9. Mother has the habit of _____ shopping list when doing shopping.A. makeB. makingC. doing( )10.There isn’t any milk ___ sugar. We need to buy some.A. andB. orC. with( )11. Many people have donated money to the _____ Project.A. DesireB. WishC. Hope( )12. I ____ you a happy journey.A. desireB. wishC. hope( )13. Health is very important to us. We should eat more vegetables and fruit instead of _____ rich food,A. too muchB. much tooC. very much( )14. There’s ____ cooking oil left in the house. Would you go to the corner store and get _____?A. little/someB. a little/someC. little/any( )15. Don’t worry if you can’t come to ____ party. I’ll save ____ cake for you.A. the/someB. the/anyC. a/ little三完型填空A generation gap has become a serious problem. I read a _1_ about it in the newspaper. Some children have killed themselves after _2_ with parents. I think this is because they don’t often have a talk with each other. Parents now _3_more time in the office. _4_they don’t have much time to stay with their children. As time passes, they both feel that they don’t have the _5_ topic to tal k about. I want to tell parents to spent more time with your _6_, get to know them and _7_ them. And for children, show your _8_ to your parents. They are the people who love you. So _9_ them your thoughts. In this way, you _10_ have a better understanding of each other.( ) 1. A. message B. report C. letter ( ) 2. A. talking B. arguing C. laughing ( ) 3. A. spend B. stay C. work ( ) 4. A. because B. if C. so( ) 5. A. different B. same C. true ( ) 6. A. business B. children C. work ( ) 7. A. get on well B. look C. understand ( ) 8. A. game B. homework C. feeling ( ) 9. A. tell B. ask C. say ( ) 10. A. can B. should C. must四连词成句1. bread have got and butter you any_________________________________________________2.got I’ve a headache_________________________________________________3.a for I have usually lunch my sandwich_________________________________________________4.loving far her had Jane a away postcard from mother _________________________________________________5.eat difficulty you did finding have something any to in _________________________________________________五翻译1.我们没有太多的糖和牛奶了。
(完整word版)新概念一练习79-80

新概念一课课练Lesson 79-80Ⅰ、用much,many或a lot of 填空。
1.John hasn’t got__________vegetables.2.I haven’t got___________ time for listening tomusic.3.I have____________black ink, but I don’thave__________blue ink.4.Susan has__________things to do this week.5.Are there___________flowers in your garden inautumn?Ⅱ、连词成句。
1.or, have, not, much, tea, got, we, coffee______________________________________________ 2.you, got, any, and, beer, have, wine(一般疑问句)______________________________________________ 3.money, hope, I, you, got, have, some______________________________________________ 4.must, I, the, grocer’s, go, today, to______________________________________________ 5.what, not, buy, to, is, Carol, going______________________________________________ Ⅲ、从括号中选择适当的词填空。
1.---Have we got any sugar and honey? ---No,we_________( haven’t ; don’t)2.I_____________(must;need)go to the shop.I haven’t got___________(any;some) ink at all.3.I_____________(must;need) a lot of meat.I haven’t got____________(many;much).4.We finished the work____________(quickly;quick).5.There is a newpaper____________(in;on)the desk.Ⅳ、把下列句子翻译成英语。
新概念英语第一册Lesson-79-80-课后练习
Lesson 79-80练习题一、基础练习A ComprehensionLook at the dialogue on Students’ book page 161 and answer these questions.1.What is Carol doing?2.What do Carol and Tom need?3.Must Carol go to the grocer’s?4.Have they got much tea or coffee?5.What must she get at the greengrocer’s?6.Have they got any meat?7.Is Carol going to get beer and wine?8.Have they got much money?B VocabularyWhere can you buy these things? Write them under the name of the correct shop. Can you add any more things to the list?C We must go to the…with so or becauseUse these words to write sentences using must, so and because.1.we / bread / baker’sWe haven’t got any bread so we must go to the baker’s to get some.W e must go to the baker’s to get some bread because we haven’t got any.2.I / eggs / grocer’s3.Carol / potatoes / greengrocer’s4.Tom / steak / butcher’s5.Tom and Carol / money / bankD About youWhat must you buy or get this week? Where? and when? Write five sentences like this.I must go to the newsagent’s tomorrow to get some envelopes.1. ______________________________________________________________2. ______________________________________________________________3. ______________________________________________________________4. ______________________________________________________________5. ______________________________________________________________二、实践拓展I.根据首字母和汉语提示写出相应的单词1. s___________购物单2. p___________土豆3. t___________西红柿4. w___________酒5. v___________蔬菜6. h___________希望7. n___________需要8. t___________东西9. m___________许多(修饰不可数名词)10. m___________许多(修饰可数名词)II.选择填空1.Are there ______ computer companies in your hometown?A. a lotB.lot ofC.muchD.lots of2.There isn’t ______ mineral water left. We have to buy another bottle.A. a lotB.manyC.muchD.lots of3.—Do you like this red car?—No, ______ .A.not soB.not at allC.littleD.few4.So ______ homework really makes the students feel tired.A.muchB.manyC.littleD.few5.I must go to the ______ to buy some meat.A.butchersB.butcher’sC.butchers’D.butcher6.There isn’t any milk ______ sugar. We need to buy some.A.andB.orC.withD.to7.We should eat more vegetables and fruit instead of ______ rich food.A.too muchB.much tooC.very muchD.very many8.I ______ you a happy journey.A.desireB.hopeC.wishD.regard9.The book ______ be John’s. It has his name on it.A.canB.mustC.needD.can’t10.Be careful! There is ______ traffic(交通).A.manyB.littleC.lessD. a lot ofIII.句型转换1.He has got much milk. (改为否定句)__________________________________________________________________2.They have got many bananas.(改为一般疑问句)__________________________________________________________________3.I’m making the bed.(就划线部分提问)__________________________________________________________________4.We need some potatoes.(就划线部分提问)__________________________________________________________________5.She often does some shopping on Sunday.(改为否定句)__________________________________________________________________IV.完成句子1.这周我们需要很多东西。
防水工考试:防水工考试考点模拟考试练习.doc
防水工考试:防水工考试考点模拟考试练习 考试时间:120分钟 考试总分:100分遵守考场纪律,维护知识尊严,杜绝违纪行为,确保考试结果公正。
1、多项选择题 防水卷材的耐化学侵蚀是。
( )A.耐水 B.耐碱 C.耐酸 D.盐 本题答案: 2、单项选择题 天沟、檐沟纵向找坡不应小于( )%。
A .1 B .1.5 C .2 D .2.5 本题答案: 3、单项选择题 冷粘法是指用( )粘贴卷材的施工方法。
A .喷灯烘烤 B .胶粘剂 C .热沥青胶 D .卷材上的自粘胶 本题答案: 4、问答题 涂膜防水的施工程序有哪些? 本题答案:姓名:________________ 班级:________________ 学号:________________--------------------密----------------------------------封 ----------------------------------------------线----------------------5、多项选择题标准规定,橡胶止水带和塑料止水带均有的技术性能指标有。
()A.耐碱性B.拉伸性能C.撕裂强度D.热空气老化本题答案:6、单项选择题验标中,要求防水板人工候化后的断裂拉伸强度保持率为。
()A.60%B.70%C.80%D.90%本题答案:7、单项选择题教学楼内每层、平房每排应放置不少于()个干粉灭火器,并放置在适当位置,且按规定年检。
A.2B.3C.4D.5本题答案:8、单项选择题水泥基胶粉材料性能指标检验,有黏度等5个参数,其检验批规定为。
()A.每批不大于50kgB.每批不大于40kgC.每批不大于30kgD.每批不大于20kg本题答案:9、多项选择题基层处理底涂应检验的性能指标。
()A.外观质量B.表干时间C.实干时间D.粘结强度本题答案:10、填空题TPO防水卷材产品规格:卷材厚度有()和()两种规格。
新概念英语一册课后练习答案Lessons79-80
【导语】新概念英语⼀共144课。
整本书⽆论是语法还是词汇,题材还是语句,都有其出彩之处。
正是因为如此,新概念英语更是经久不衰,深受⼴⼤英语学习者的喜爱。
⽆忧考为您整理了“新概念英语⼀册课后练习答案Lessons 79-80”,希望可以帮助到您! 新概念英语第⼀册第79-80课词汇学习 Word study hope (1)v. 希望;盼望;期待: I hope that you'll have a lovely vacation. 我希望你能有⼀个愉快的假期。
Mark's hoping to study Law at Harvard. 马克盼望着进⼊哈佛⼤学学习法律。
I hope that you've got some money. 我希望你有了些钱。
(2)n. 希望,期望;指望: We are full of hope for the future. 我们对未来充满信⼼。
(3)n. 期望着的事;被寄予希望的⼈: His hope is that his son will get married and settle down soon. 他所希望的是他⼉⼦能早点结婚,安顿下来。
He is a young man of genius, the hope of Russian poetry. 他是⼀位年轻的天才,是俄罗斯诗歌的希望所在。
need (1)v. 需要: We need some honey. 我们需要些蜂蜜。
Do you need any help? 你需要帮忙吗? Does he need to know? 他需要知道吗? (2)n. 需要(物);必要: There is no need of worrying. 不必担⼼。
There's a growing need of new housing in many cities. 许多城市正⾯临着对新建房屋的不断增长的需求。
新概念英语第一册Lesson-79-80-练习题(无答案)
新概念英语第⼀册Lesson-79-80-练习题(⽆答案)Lesson 79 and Lesson 80⼀根据句意填空(10分)1. When you want to buy some things, you must make a ___________ first.2. There are a ___________ of apples in the refrigerator.3. You can get some ___________ at the grocer’s.4. We haven’t ___________ any vegetabl es at all.5. He has no ears ___________ eyes.6. Must I take a bus there No, you ___________.7. Teachers ___________ that their students all study well.8. We haven’t ___________ wine, but we have a lot of beer.9. I must go to the stationer’s to get som e ___________.10. You can get some medicine at the ___________.⼆⽤所给词的适当形式填空(10分)1. I must go to the ___________ (newsagent) to get some writing paper.2. Carl is making a ___________ (shop) list.3. She hasn’t ___________ (get) much tea or coffee.4. What about ___________ (vegetable)5. They don’t have ___________ (many) milk.6. You can get some ___________ (grocer) at the grocer’s.7. I like ___________ (chemist) best of all the subjects.8. There is a lot of ___________ (stationer) at the stationers.9. The desk is broken. It needs ___________ (need).10. Here if a card for you with out best ___________ (wish).三⽤所给动词的适当形式填空(10分)1. You need ___________ (take) a bus there.2. We needn’t ___________ (work) like that.3. We about ___________ (buy) some vegetables.4. I’m sorry for ___________ (miss) the appointment.5. I must go to the butcher’s ___________ (get) some meat.6. I wish ___________ (visit) China next year.7. He hopes ___________ (be) a doctor.8. The room needs ___________ (paint).9. I hope that you have ___________ (get) some money.10. Mr. Croft ___________ (have) a terrible toothache last Sunday.四⽤⽅框内提供的短语填空(10分)1.You can get some groceries ___________ .2. 2. Mrs. Williams bought some beef ___________.3.There are all kinds of vegetables and fruits ___________.4.Your hair is long. You can have a haircut ___________.5.You can see a dentist ___________.6.You need to get some butter, cheese and milk ___________.7.They sell medicine ___________.8.I must go and get some pencils ___________.9.Bread smells nice ___________.10.Did you buy today’s newspaper ___________五选择填空(15分)( ) 1. I can’t do it, so I ___________ your help.A. needB. needn’tC. don’t needD. am need( ) 2. Must I clean the classroom nowNo, you ________.A. needn’tB. mu stn’tC. can’t D don’t( ) 3. We need you ___________ us.A. helpB. helpingC. to helpD. helps( ) 4. I must go to ___________ to buy some ___________.A.the butcher’s, meatB.the chemist’s, grocer’sC.the grocer’s vegetablesD.the newsage nt’s, medicine( ) 5. Have you got ___________ potatoesD. some( ) 6. We haven’t got much tea ___________ coffee.A. andB. soC. orD. with( ) 7. ___________ we ___________ to go to the newsagent’sA. Do, needB. Need, doC. Are, needD. Need, are( ) 8. Carol hasn’t got much money. Tom hasn’t got much, ___________.A. tooB. eitherC. soD. yet( ) 9. I hope ___________ you’ve got some money.A. thatB. itC. thisD. what( ) 10. There isn’t ___________ food in the refrigerator, but there’s ___________ wine in it.A.much, a lot ofB. a lot of, muchC. a lot of, manyD.many, a lot of( ) 11. I must go to the baker’s ___________ some bread and cakes.A. to getB. for getC. gettingD. to getting( ) 12. Need I ___________ busD. taking( ) 13. ___________ we ___________ any beer and wineA. Have, gotB. Do, hasC. Do, getD. Do, have got( ) 14. I ___________ that you could fly like a bird.A. hopeB. wishC. thinkD. guess( ) 15. My watch is broken. It needs ___________.A. to mendB. mendingC. mendsD. mended六句型转换(5分)1. We need a lot of things this week. (变为否定句)We ___________ need ___________ things this week.2. He need n’t go to the brother’s. (变为同义句)He doesn’t ___________ ___________ go to the brother’s3. Let’s buy some vegetables. (变为同义句)___________ ___________ buying some vegetables4. I must go to the chemist’s to get some medicine. (变为同义句)I must go to the chemist’s ___________ some medicine.5. I hope that I can help you. (变为同义句)I ___________ ___________ help you.七根据汉语提⽰完成句⼦(10分)1. 我必须去到⾷杂店买⼀些⾷品杂货。
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新一课前测试题L79-80 姓名__________分数__________
一.单词
1.购物_________________
2.胆子________________
3.蔬菜_____________
4.需要________________
5.希望________________
6.事情________________
7.钱________________ 8.食品杂货________________ 9.报刊零售人________________
10.水果________________ 11.文具________________ 12.化学家________________
二.汉译英
1.这星期我们需要很多东西。
_______________________________________________________________________
2.我们没多少番茄了,土豆还有不少。
_______________________________________________________________________
3.我们一点肉也没有了。
________________________________________________________________________
三.用some或any填空:
1.Please give me water.
2.There isn’t chocolate on the table.
3.There are flowers in front of the window.
4.Are there boxes on the floor?
5.Is there tea on the table?
四.用many/much填空:
1.There aren’t ________ trees in the fields.
2.I’ve got money in my pocket.
3.Do you have friends in Beijing?
4.My fri end doesn’t know English.
5.He hasn’t things to do today.
五.介词(at,in,on)填空:
1、Class begins eight the morning.
2、Miss Blake usually comes home from work four o’clock in the afternoon.
3、What do you usually do Sunday morning?
4、We’ll have a test November.
5、January 1,there is no work done in his factary.
6、Children don’t have classes June 1.
7、What’s the weather like your country winter?.
8、He is going to telephone five o’clock.
9、My birthday is May 22nd.
10、It is always cold February.。