【单选题】
在串联网路中，只要有一发电雷管___断路就会造成整个网路断路。
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相关试题
【单选题】
多孔粒状铵油炸药的装药密度为0.90g／cm3～0.93g／cm3时，爆速一般为___。
A. 2600m／s
B. 2700m／s
C. 2800m／s
D. 2900m／s
【单选题】
导爆管的管壁材料为高压聚乙烯___。
A. 橡胶
B. 塑料
C. 胶皮
D. 玻璃纤维
【单选题】
根据起爆药包在炮孔中安放的位置不同，有三种不同的起爆方式：___、反向起爆和多点起爆。
A. 电起爆
B. 正向起爆
C. 非电起爆
D. 平行起爆
【单选题】
自由面越多，爆破破碎越容易，爆破效果也___。
【单选题】
煤矿井下光面爆破时，周边光爆炮眼应用炮泥封实，且封泥长度不得小于___。
A. 0.6m
B. 0.5m
C. 0.4m
D. 0.3m
【单选题】
深孔爆破时，炮孔布置形式一般有___、正方形和矩形三种。
A. 三角形
B. 波浪形
C. 圆型
D. 椭圆形
【单选题】
裸露药包爆破时要注意大块石的形状，尽量将药包放置在___部位。
【单选题】
以下描述中哪个是描述拒爆的？___
A. 雷管和炸药都没有爆炸
B. 雷管引爆了炸药
C. 炸药在传爆过程中熄灭了，孔底留有残药
D. 炸药在地下爆出了一个大坑
【单选题】
多头掘进时，爆破母线要随用随挂。爆破母线必须挂在电缆、信号线下方，距离要大于___。
A. 0.3m
B. 0.4m
C. 0.5m
D. 0.6m
【单选题】
在炮孔内放置起爆药包时，雷管脚线要顺直，轻轻拉紧并贴在孔壁一侧，防止损坏___，同时可减少炮棍捣坏脚线的机率。
【单选题】
煤矿井下爆破工作面有2个或2个以上自由面时，在煤层中最小抵抗线不得小于___。
A. 0.6m
B. 0.5m
C. 0.4m
D. 0.3m
【单选题】
对于一般民用建筑物，当主振频率在10Hz＜f≤50Hz范围时，其爆破振动安全允许标准为___cm/s。
A. 1～1.5
B. 1.5～2
C. 2.0～2.5
D. 2.5～3
【单选题】
一般情况下，矿山的井下爆破器材库是建在___用于储存民用爆炸物品的硐室。
【单选题】
在爆破作业现场，应当由爆破员与安全员___清点剩余的爆破器材，共同签字确认使用和剩余爆破器材的记录。
【单选题】
水溶解池场地和残渣烧毁场地都要选择在野外，___、交通方便、不污染水源的地方。
【单选题】
爆炸销毁场地应距10万人口以下城市的边缘保持在___km以上。
【单选题】
储存库内爆破器材堆垛与堆垛之间应留有宽度不小于___m的装运通道。
【单选题】
采用爆炸法销毁导爆索时，一次销毁导爆索的长度不宜超过___m，而且要与其它爆炸物品分开销毁。
【单选题】
根据《小型民用爆炸物品储存库安全规范》（GA838）的有关规定，民爆库房单库储存雷管的数量不能大于___发。
A. 10000
B. 20000
C. 30000
【单选题】
用溶解法销毁黑火药时，___丢入河塘江湖及下水道中。
A. 可以
B. 不应直接
C. 在安全的情况下，可以
【单选题】
爆破员、安全员、保管员的年龄应在18周岁以上，___周岁以下。
【单选题】
爆破员岗位职责要求，爆破员应___好自己所领取的民用爆炸物品。
【单选题】
爆破作业结束后应当及时检查、___未引爆的民用爆炸物品。
【单选题】
4、民用爆炸物品的装载应符合国家有关标准和规范，车厢内不得___。
【单选题】
手持机系统由手持机、lC卡和___组成。
【单选题】
爆破作业单位聘用无资格人员从事爆破作业或爆破器材管理的，可由公安机关对单位处___的罚款。
A. 10万元以上
B. 10万元以上50万元以下
C. 50万元以下
【单选题】
___的销售、购买及废旧民用爆炸物品销毁等行为，都适用《民用爆炸物品安全管理条例》。
【单选题】
经由道路运输民用爆炸物品的，要严格执行《民用爆炸物品运输许可证》“___”的规定。
A. 一车一证一次使用
B. 一证一车多次使用
C. 一证一车一次使用
【单选题】
爆破作业单位聘用无资格人员从事爆破作业或爆破器材管理的，可由公安机关对行为人予以___。
【单选题】
冲击波感度是指在___作用下炸药发生爆炸的难易程度。
A. 超声波
B. 冲击波
C. 地震波
D. 电磁波
【单选题】
多孔粒状铵油炸药的装药密度为0.90g／cm3～0.93g／cm3时，爆速一般为___。
A. 2600m／s
B. 2700m／s
C. 2800m／s
D. 2900m／s
【单选题】
目前，常用的工业雷管主要有___、导爆管雷管和电子雷管三大类。
A. 电雷管
B. 毫秒电雷管
C. 半秒雷管
D. 秒雷管
【单选题】
乳化炸药分___、煤矿乳化炸药和露天乳化炸药三种类型，它是目前使用最广泛的含水炸药。
A. 岩石乳化炸药
B. 液体乳化炸药
C. 固体乳化炸药
D. 铵油乳化炸药
【单选题】
抗静电电雷管按延期时间分为抗静电___电雷管和抗静电毫秒延期电雷管。
【单选题】
起爆电子雷管需要专门的起爆设备并需要通过___识别，如密码正确则启动内置的延期程序，达到规定的延期时间后，才输出强的电流信号引爆雷管。
【单选题】
对于电子雷管起爆网路，不同厂家生产的电子雷管严禁混用，不同厂家生产的电子雷管与___也严禁混用。
A. 欧姆表
B. 雷管
C. 起爆器
D. 报警器
【单选题】
导爆管是一根内壁涂有薄层___的空心塑料软管。
A. 炸药粉末
B. 涂料
C. 颜料
D. 油漆
【单选题】
炸药在岩土、钢筋混凝土等介质内部爆炸时，对周围介质的作用称为___。
A. 爆裂作用
B. 爆破作用
C. 冲击作用
D. 破碎作用
【单选题】
一般而言，爆破结果的好坏可以从以下四个方面进行描述：爆破块度、爆堆形态、爆破效果和___效应。
A. 爆破飞石
B. 爆破振动
C. 爆破噪音
D. 爆破危害
推荐试题
【单选题】
Tom is a book lover. ______ likes reading very much.
A. He B. She C. You D. It
【单选题】
—May I listen to the music here, Mr. White?
—Sorry, you’d better it like that．
A. not to do B. not do to
C. dont do D. not do
【单选题】
3.—Did you have a good time at Lauras birthday party?
— Yes, indeed. Its several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
【单选题】
4. —___________ is the Summer Palace from here?
About three kilometers away. You can take the No. 35 bus.
A. How long B. How far C. How often D. How much
【单选题】
5. I was looking for a birthday gift for my mother, but I couldnt find ______ suitable.
A. anything B. something C. nothing D. everything
【单选题】
6. A friend of my ____ and I are going to visit_______ next week．
A. father; Browns B. father's; Browns
C. father; the Browns D. father's; the Browns
【单选题】
7. She ______ very hard since she came to our school.
A. studies B. has studied C. is studying D. studied
【单选题】
8. — Who will send you to the new school, your mom or your dad?
— _______. Ill go there by myself.
A. Both B. Either C. Neither D. None
【单选题】
9.—Well do what we can ____English well this term．
—It’s high time for you to work hard．
A. study B．to study C. be studied D. be studying
【单选题】
10. —I’m going to Flower Bookstore. Could you tell me ______?
— Sorry, I don’t know. I’m new here.
A. where it is B. where was it C. where is it D. where it was
【单选题】
11. How do you like the dishes, Eric?
— Fantastic! Nothing tastes ________.
A. nice B. better C. terrible D. worse
【单选题】
12. ______ Lin Feng has to work late, she always wears a smile on her face.
A. Because B. If C. Until D. Though
【单选题】
13.You can save money _______ you buy cheaper things.
A. before B. unless C. if D. until
【单选题】
14. We will have a _________ holiday after the exam．
A. two-month B. two month’s C. two month D. two-months
【单选题】
15. —We will build an underground in Xuzhou before 2015．
— Wow, _______! Will it pass our place?
A. what an excited news B. how excited the news is
C. what exciting news D. how exciting
【单选题】
16. — Emily, here’s a dictionary．I hope it will help you in some way．
— Thank you．It’s ________ what I need．
A. almost B. still C. only D. just
【单选题】
17. —Oh．I’m hungry．Mum, can I have the hamburger on the plate?
—No．It tastes ．
A. terribly B. terrible C. good D. well
【单选题】
18. —We can invite our teachers to the farewell party next Saturday.
—Yes, ______? I’ll call them at once.
A. what for B. what C. why not D. why
【单选题】
19.You can ________ ask the old man to move away to any other place because he has lived ________ here for at least sixty years．
A. hardly; alone B. hard; alone
C. hardly; lonely D. hardly; lonely
【单选题】
20.—I’m going back to see my grandparents this weekend．
—________．
A. It’s very nice of you B. You’d better hurry
C. Say goodbye to them D. Give my best wishes to them
【单选题】
21.—Why not take ____ umbrella with the sign “Made in China”? It is useful.
—What _______ good advice it is!
A. an; a B. a; a C. an; \ D. \; a
【单选题】
22. —Do you know the boy________ is sitting next to Peter?
— Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; ninth C. /; ninth D. which; ninth
【单选题】
23. It was dark, ______ I couldnt see what was happening.
A. or B. though C. but D. so
【单选题】
24.—You can use MSN to talk with Vivien on the Internet.
—I know. But can you tell me ________?
A. what I can use it B. when I can use it
C. why can I use it D. how can I use it
【单选题】
25. _______ are you going to the School Uniform Exhibition, Amy ?
To learn about different styles of school uniform.
A. What B. Where C. Which D. Why
【单选题】
( ) 26. Where does the writer of "The little Prince" come from?
A．England． B．France． C．America． D．China．
【单选题】
( ) 27. What does the prince do after the fox tells him a secret?
A．He cares more about a flower and a sheep．
B．He meets many more strange adults on other planets．
C．He realizes his love for the rose and he goes back to his planet．
D．He discovers interesting things such as a snake, other roses and a fox
【单选题】
( ) 28. What does "The little Prince" mainly talk about? It' s about _________．
A．the adult world B．the planet B -612
C．a rose and a fox D．the adventure of a young prince
【单选题】
( ) 29. What is the writer's main purpose（目的）in writing this passage？
A．To tell the readers his life story．
B．To tell people what kind of person his father was．
C．To tell the readers what present he got from his father．
D． To let people know how poor he was．
【单选题】
( ) 30. Why did the father not ask his son not to do this and do that？
A．Because he felt quite confident of his son．
B．Because he was born from a poor family．
C．Because he was a man of few words．
D．Because he didn't want to be much too strict with his son．
【单选题】
( ) 31. What would someone learn from this passage？
A．How to live by oneself． B．How to stand on one's own feet．
C．What a good father should do． D．What the self-important is like．
【单选题】
( ) 32. What may be the proper Chinese for the underlined part in the passage？
A．闲暇时光 B．学费 C．精神空虚 D．经济不足
【单选题】
( ) 33. Why did Natalie Smith pay for the six cars behind her?
A. She had seven tickets.
B. She hoped to please others.
C. She knew the car drivers well.
D. She wanted to show kindness.
【单选题】
( ) 34. Judy Foreman copied down the phrase because she ___ .
A. thought it was beautifully written
B. wanted to know what it really meant
C. decided to write it on a warehouse wall
D. wanted her husband to put it up in the classroom
【单选题】
( ) 35. Who came up with the phrase according to the passage?
A. Judy Foreman. B. Natalie Smith. C. Anne Herbert D. Alice Johnson.
【单选题】
( ) 36. What can we infer from the last paragraph?
A. People should practice random kindness to those in need.
B. People who receive kindness are likely to offer it to others.
C. People should practice random kindness to strangers they meet.
D. People who receive kindness are likely to pay it back to the giver.
【单选题】
( ) 37.The greatest river for navigation is ___________.
A. the Nile B. the Amazon C. the Mekong D. the Mississippi
【单选题】
( ) 38. From a dam, people can use the water for ___________.
A. keeping the rivers clean B. only making electricity
C. irrigation and making electricity D. washing clothes
【单选题】
( ) 39. The water in the river is polluted because of _____________.
A. people's drinking water too much B. people's swimming in the river too much
C. chemicals and other materials D. people's building a dam across a river
【单选题】
( ) 40. The best title of the passage is ___________.
A. Rivers in Cities B. The importance of Rivers
C. Transportation D. Natural Resources
