【单选题】
- Do you mind if I switch off the radio? ______. Go ahead.
A. Never mind
B. No way
C. No, not at all
D. No, you'd better not
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【单选题】
- Could I use your bike for a moment? ___
A. It's well.
B. It doesn't matter.
C. By all means.
D. I have no idea.
【单选题】
-How do you like the story?_______.
A. I'd like to read it
B. I like it very much
C. fine, thank you
D. It's very interesting
【单选题】
- I'll sorry to trouble you.______.
A. Don't say so
B. OK
C. It doesn't matter
D. That's fight
【单选题】
- We ordered 20 boxes of your products, but we have only got 19. - ____
A. You do not have to.
B. It does not matter.
C. We will send another tomorrow.
D. Nothing serious.
【单选题】
--Will you please give the note to him? _________.
A. Certainly, I'll give it to him
B. No, please not
C. Sorry, I don't
D. Yes, please do
【单选题】
- Thank you ever so much for your lovely gift____
A. Never mind
B. I'm glad you like it.
C. Please don't say so.
D. No, It's not so good.
【单选题】
- I'd like to invite you to dinner this Saturday, Mr. Smith.____
A. Oh, no. let's not.
B. I'd rather stay at home.
C. I'm sorry, but I have other plans.
D. Oh, no. That'll be too much trouble.
【单选题】
- Could you please open the window?____
A. I can't.
B. Go ahead.
C. Sure.
D. It's really very kind.
【单选题】
- Do you think I can borrow your bike for a few hours?____
A. I'm afraid you can.
B. I'm sorry, but I really need it this afternoon.
C. Yes, I don't think so.
D. I'll think about it later.
【单选题】
- Thank you very much for the dictionary you sent me.____
A. No thanks.
B. I'm glad you like it.
C. Please don't say so.
D. No, it's not so good.
【单选题】
- How do you like the movie we saw yesterday?____
A. You are welcome.
B. How about you?
C. I've never seen a better movie than it.
D. It is very expensive.
【单选题】
- What do you think of your new teacher____
A. He came to teach us last week.
B. He teaches us English.
C. He has two children.
D. He is very nice.
【单选题】
- Are you going to have a holiday?____
A. Not until next week.
B. Three weeks ago.
C. To Beijing.
D. I'm pleased to hear that.
【单选题】
- You seem to be lost. Need help? ____
A. Yes, would you please help me with the bag?
B. Help me find my key, please.
C. Yes, with pleasure.
D. I'm looking for Zhongshan Road.
【单选题】
- Can you help me clear up the mess____
A. Yes, it doesn't matter.
B. No, that's OK.
C. Yes, help yourself.
D. No problem.
【单选题】
- Does No.20 bus stop at our school?____
A. I go to school by bus.
B. I'm afraid not.
C. You are welcome.
D. I'll not take No.20 bus.
【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
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___目前使用最普遍的是采用X射线检验，还有超声波探伤和磁力探伤。
A. 无损探伤
B. 外观检查
C. 仪器检测
D. 机器检测
【单选题】
焊条电弧焊是利用焊工眼睛、脑、手配合适时调整弧长，电弧焊自动调节系统则应用___控制系统进行调节。（中）
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CO2 气体保护焊工艺具有生产率___、焊接成本低、适用范围广、低氢型焊接方法焊缝质量好等优点。（ 易 ）
【单选题】
CO2 气体保护焊设备可分为___焊和自动焊两种类型。（中）
A. 半自动
B. 全自动
C. 手动
D. 半手动
【单选题】
电流是由电子的定向移动形成的,习惯上把（ ）定向移动的方向作为电流的方向。（易）
A. N-S
B. 右手定则
C. 正电荷
D. 左手定则
【单选题】
29、电流的大小用电流强度来表示,其数值等于单位时间内穿过导体横截面的（）代数和。（中）
A. 电流强度
B. 电流
C. 电量（电荷）
D. 功率
【单选题】
30、导体的电阻不但与导体的长度、截面有关,而且还与导体的（）有关。（中）
【单选题】
31、并联电路中, 电流的分配与电阻成( )。（易）
A. 反比
B. 正比
C. 1:1
D. 2:1
【单选题】
33、串联电路具有以下特点( )。（易）
A. 各电阻上消耗的功率之和等于电路所消耗的总功率
B. 各电阻上分配的电压与各自电阻的阻值成正比。
C. 串联电路中各电阻两端电压相等
D. 流过每一个电阻的电流不相等
【单选题】
24、1安培等于（）微安。（易）
A. 10³
B. 10的6次方
C. 10的9次方
D. 10²
【单选题】
27、电路主要由负载、线路、电源、（ ）组成。（易）
A. 发电机
B. 变压器
C. 开关
D. 仪表
【单选题】
26、额定电压为220V的灯泡接在110V电源上,灯泡的功率是原来的（ ）。（难）
【单选题】
25、将一根导线均匀拉长为原长度的3倍,则阻值为原来的（ ）倍。（难）
【单选题】
由___、负载、开关经导线连接而形成的闭合回路称之为电路。（易）
【单选题】
电源是提供___的装置.（易）
A. 电能
B. 电子
C. 交流电
D. 直流电
【单选题】
为了准确地衡量某一时刻电流的大小或强弱，引入了___这个物理量。（易）
A. 电流强度
B. 电压
C. 电流量
D. 电压强度
【单选题】
___是衡量电场作功本领大小的物理量。（易）
A. 电流强度
B. 电流
C. 电子
D. 电压
【单选题】
电阻常用字母R表示，其单位是___。（易）
【单选题】
金属导体电阻的大小与导体长度成___，与横截面积成（ ）。（中）
A. 反比 反比
B. 反比 正比
C. 正比 正比
D. 正比 反比
【单选题】
电阻器是利用___材料的电阻特性制成的器件。（易）
A. 合成
B. 金属
C. 非金属
D. 金属或非金属
【单选题】
欧姆定律是反映___三者之间关系的基本定律。（易）
A. 电压 电流 电子
B. 电压 电子 电阻
C. 电子 电流 电阻
D. 电压 电流 电阻
【单选题】
当温度不变时，流过导体的电流与这段导体两端的电压成___，与这段导体的电阻成（ ）。（易）
A. 正比 正比
B. 反比 正比
C. 反比 反比
D. 正比 反比
【单选题】
沿电流流动的力向，在电阻上必然产生电压降，此压降与___成正比。（易）
A. 电压
B. 电流
C. 电压和电流
D. 电流和电阻
【单选题】
全电路是含有电源的___。（易）
A. 闭合电路
B. 串联电路
C. 并联电路
D. 混联电路
【单选题】
全电路欧姆定律的内容是：全电路中的电流与电源的电动势成___，与整个电路（即内电路和外电路）的总电阻成（ ）。（易）
A. 正比 反比
B. 反比 反比
C. 正比 正比
D. 反比 正比
【单选题】
电路接通时电源两端的电压，通常简称___。（易）
A. 端电压
B. 外电压
C. 总电压
D. 负电压
【单选题】
几个电阻的首尾依次相连，中间没有分支，只有一条电流通路。这种连接方式称为电阻的___。（易）
A. 串联电路
B. 并联电路
C. 混联电路
D. 集成电路
【单选题】
串联电路中，某一电阻值与总电阻值之比，称为分压比（或分压系数），用字母___表示。（易）
A. “K”
B. “I”
C. “U”
D. “R”
【单选题】
电阻值越大分配电流越___，电阻值越（ ）分配电流越大。（易）
A. 小 小
B. 大 小
C. 大 大
D. 小 大
【单选题】
蓄电池的容量，是在放电允许范围内，蓄电池所输出的电量，它表示蓄电池的供电能力，用字母___表示。（易）
A. “I”
B. “Q”
C. “U”
D. “K”
【单选题】
“I”的单位是___，“t”的单位是（ ），“Q”的单位是（ ）。（易）
A. 小时(h) 安(A) 安时(Ah)
B. 安(A) 小时(h) 安时(Ah)
C. 安时(Ah) 安(A) 小时(h)
D. 小时(h) 安时(Ah) 安(A)
【单选题】
电池___后，总内阻等于各单个电池内阻之和。（易）
【单选题】
电功用字母___表示。（易）
A. “J”
B. “I”
C. “U”
D. “R”
【单选题】
电功率是单位时间内电场力所作的功或单位时间内消耗在电路内的___。（易）
