【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?
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相关试题
【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
【单选题】
We came finally ___the conclusion that she has been telling lies all the time.
A. of
B. into
C. to
D. at
【单选题】
I won’t make the___mistake next time.
A. like
B. same
C. near
D. similar
推荐试题
【单选题】
当交流电频率增加时，人体的感知电流___。
A. 相应增加
B. 相应减小
C. 不确定
D. 不变
【单选题】
下列___不属于高压基本绝缘安全用具。
A. 绝缘棒
B. 绝缘夹钳
C. 绝缘靴，绝缘手套
D. 高压验电器
【单选题】
正弦交流电的三要素是、___角频率、初相位。
A. 瞬时值
B. 有效值
C. 额定值
D. 幅值
【单选题】
低压操作中，人体或其所携带的工具与带电体之间的距离应不小于___m。
A. 0.1
B. 0.5
C. 0.7
D. 大于0.7
【单选题】
接闪杆采用镀锌圆钢时，圆钢直径不应小于___mm。
【单选题】
凡有较大危险的环境里的局部照明灯应采用___V或24V安全电压供电。
【单选题】
一般情况下220V工频电压作用下人体的电阻为___Ω。
A. 1000
B. 1000～2000
C. 2000～2500
D. 2500以上
【单选题】
新装和大修后的低压线路和设备，要求绝缘电阻不低于___MΩ。
A. 0.2
B. 0.4
C. 0.5
D. 1
【单选题】
TN-C系统的PEN线断开后，则负载中性点将发生___。
A. 接地
B. 断“相”
C. 短路
D. 电移位
【单选题】
登杆前，应先将踏板挂钩挂好，踏板离地面___cm。
A. 5～10
B. 10～15
C. 15～20
D. 20～25
【单选题】
10kV及以下架空导线为铝绞线时，通过非居民区，其最小截面应为___mm2。
【单选题】
10kV及以下架空电力线路不应超过设计档距的___。
A. 0.01
B. 0.02
C. 0.03
D. 0.04
【单选题】
为了防止停电设备突然来电和邻近高压带电设备对停电所产生的___对人体的危害，需要用携带型接地线将停电设备已停电的三相电源短路并接地。
A. 感应电压
B. 残余电荷
C. 感应电流
D. 接触电压
【单选题】
剩余电流动作保护装置的选择，必须考虑用电设备和电路正常___的影响。
A. 剩余电流
B. 泄漏电流
C. 额定电流
D. 启动电流
【单选题】
带电部分与可接触及导体之间的绝缘电阻I类电气设备不低于___MΩ。
【单选题】
当采用___类灯具时，灯具外露可导电部分应可靠接地。
【单选题】
采用星三角降压启动时，启动电流为直接采用三角形联接时启动电流的___。
A. 1/3
B. 1／√3
C. 1/2
D. 1／√2
【单选题】
配电装置的长度超过6m时，屏后应有两个通向本室或其他房间的出口，其距离不宜大于___m。
【单选题】
操作后应检查各相的实际位置，无法___实际位置时，可通过间接方式确认设备已操作到位。
【单选题】
低压配电线路其档距不一定超过___m。
【单选题】
室内灯具灯头使用的导线最小截面积，铜线不得小于___mm2，铝线不得小于1.5mm2。
A. 0.5
B. 0.75
C. 1
D. 1.5
【单选题】
电气设备停电后，即使是事故停电，在未拉开隔离开关和做好安全措施以前，不得___，以防突然来电。
A. 触及设备
B. 进入遮拦
C. 更改操作票
D. 触及设备和进入遮拦
【单选题】
兆欧表手摇发电机有离心式调速装置，转动发电机时使发电机能以___的速度转动。
A. 很快
B. 很慢
C. 先慢后快
D. 恒定
【单选题】
在相同的线电压下，负载作三角形连接时的有功功率是星形连接时有功功率的___倍。
【单选题】
无论高压设备带电与否，值班人员___单独移开或越过遮拦进行工作。
A. 不得
B. 可以
C. 有条件允许
D. 在这栏外进行这栏内的工作
【单选题】
电阻并联电路中的等效电阻（即总电阻）的倒数等于各并联电阻的倒数___。
【单选题】
在电阻并联电路中，电流的分配与支路电阻___。
【单选题】
触电事故季节明显，事故多发生在___月。
A. 3～4
B. 5～6
C. 6～9
D. 9～10
【单选题】
接触器的电寿命约为机械寿命的___倍。
A. 1/5
B. 1/10
C. 1/15
D. l/20
【单选题】
触电者触及断落在地上的带电高压导线，救护人员在未做好安全措施前，不能接近断线点___m范围内，以防止跨步电压。
A. 4～6
B. 6～8
C. 8～10
D. 10～12
【单选题】
电流互感器的二次侧线应选用___mm2的单股绝缘铜导线，中间不得有接头。
【单选题】
___是当雷云接近地面，在架空线路或其他导电凸出物顶部感应大量电荷。
A. 直击雷电过电压
B. 电磁感应过电压
C. 静电感应过电压
D. 冲击过电压
【单选题】
雷电是自然界的一种___现象。
A. 放电
B. 充电
C. 导电
D. 电流冲击
【单选题】
油浸型设备最低油面以下深度不得小于___mm。
【单选题】
增安型设备的裸露带电部件的外壳防护不应低于___。
A. IP24
B. IP34
C. IP44
D. IP54
【单选题】
万用表的电压灵敏度越高，测量电压时消耗的功率___。
【单选题】
中间继电器的触点数量比较多，可以将一路信号转变为___信号。
【单选题】
车间及实验室的插座安装高度不宜小于___m。
A. 1
B. 0.6
C. 0.3
D. 0.15
【单选题】
高压架空线路的导线经过居民区时，对地面的最小距离为___m。
A. 3.5
B. 4.5
C. 5.5
D. 6.5
