【多选题】
下列属于鸡爪子现象的是___。
A. 橡套电缆的连接不采用硫化热补或同等效能冷补者#
B. 电缆（包括通讯、照明、信号、控制以及高压，低压橡套电缆）的连接，不采用防爆接线盒的接头#
C. 铠装电缆的连接不采用防爆接线盒或不灌注绝缘填充物或充填不严密露出芯线的接头#
D. 电缆的末端不接装防爆电气设备或防爆装置
查看试卷，进入试卷练习
微信扫一扫，开始刷题
相关试题
【多选题】
个体防护的用具主要有___。
A. 防尘口罩#
B. 防尘风罩#
C. 风尘帽#
D. 防尘呼吸器
【多选题】
井工煤矿必须制定停工停产期间的安全技术措施，保证矿井___系统正常运行。
A. 供电#
B. 通风#
C. 排水#
D. 安全监控
【多选题】
井工煤矿必须按规定填绘___。
A. 巷道布置图#
B. 井上、下对照图#
C. 采掘工程平面图#
D. 通风系统图
【多选题】
井工煤矿应当向矿山救护队提供采掘工程平面图、___、（ ）、（ ）、灾害预防和处理计划,以及应急救援预案。
A. A、矿井通风系统图#
B. #C、#D、#B、井上下对照图#
C. 井下避灾路线图#
D. 辅助运输线路图
【多选题】
井工煤矿应向矿山救护队提供___灾害预防和处理计划，以及应急预案 。
A. 采掘工程平面图#
B. 矿井通风系统图#
C. 井上下对照图#
D. 井下避灾路线图
【多选题】
井工煤矿炮采工作面应采用湿式钻眼、___等综合防尘措施。
A. 冲洗煤壁#
B. 水炮泥#
C. 黄泥#
D. 出煤洒水
【多选题】
井工煤矿掘进机作业时，应采用___及通风除尘等综合措施。掘进机无水或喷雾装置不能正常使用时，必须停机。
A. 内喷雾#
B. 外喷雾#
C. 洒水灭尘#
D. 净化风流
【多选题】
井下___的支护和风门、风窗必须采用不燃性材料。
A. 爆炸物品库#
B. 机电设备硐室#
C. 检修硐室#
D. 材料库
【多选题】
井下一氧化碳的来源是___。
A. 井下火灾与瓦斯、煤尘爆炸#
B. 井下爆破#
C. 矿井内的风流#
D. 人的呼出
【多选题】
井下二氧化碳的主要来源是___。
A. 煤炭和坑木物质的氧化#
B. 碳酸性岩石与酸性水的分解作用#
C. 从煤层或围岩渗出，井下水灾或火区#
D. 瓦斯煤尘爆炸
【多选题】
井下下列___设备必须设置甲烷断电仪或者便携式甲烷检测报警仪。
A. 采煤机、掘进机、掘锚一体机、连续采煤机#
B. 梭车、锚杆钻车#
C. 采用防爆蓄电池或者防爆柴油机为动力装置的运输设备#
D. 其他需要安装的移动设备
【多选题】
井下不得带电检修电器设备。严禁带电搬迁非本安型___，采用电缆供电的固定式用电设备不受此限。
A. 电气设备#
B. 电缆#
C. 开关#
D. 移动
【多选题】
井下风门根据用途不同可分为___。
A. 普通风门#
B. 调节风门#
C. 自动风门#
D. 反向风门
【多选题】
井下火灾灭火的方法有___三类。
A. 直接灭火#
B. 隔绝灭火#
C. 联合灭火#
D. 间接灭火
【多选题】
井下引爆煤尘的高温火源有___。
A. 爆破火焰#
B. 电火花#
C. 井下火灾#
D. 明火
【多选题】
井下以下___地点必须设置甲烷传感器。
A. 采煤工作面及其回风巷和回风隅角，高瓦斯矿井采煤工作面回风巷长度小于1000m时回风巷中部#
B. 煤巷、半煤岩巷和有瓦斯涌出的岩巷掘进工作面及其回风流中，高瓦斯和突出矿井的掘进巷道长度大于1000m时掘进巷道中部#
C. 突出矿井采煤工作面进风巷#
D. 采用串联通风时，被串采煤工作面的进风巷；被串掘进工作面的局部通风机前
【多选题】
井下以下___地点必须设置甲烷传感器。
A. 采区回风巷#
B. 一翼回风巷#
C. 总回风巷#
D. 进风巷
【多选题】
井下用电池（包括原电池和蓄电池）串联和并联的电池组应保持___一致性。
A. 厂家
B. 型号#
C. 规格#
D. 数量
【多选题】
井下机电设备硐室必须设在进风风流中，该硐室采用扩散通风的，其___，并且无瓦斯涌出。
A. 深度不得超过6m#
B. 深度不得超过8m#
C. 入口宽度不得小于1.5m#
D. 入口宽度不得小于1.0m
【多选题】
井下各级配电电压和各种电气设备的额定电压等级，应当符合下列___要求。
A. 高压，不超过10000V#
B. 低压，不超过1140V#
C. 架线电机车直流电压，不超过380V#
D. 照明和手持式电气设备的供电额定电压，不超过36V
【多选题】
井下防止静电的主要措施有___。
A. 禁止使用高绝缘材料#
B. 将有可能产生静电的设备器材进行接地#
C. 工作人员禁止穿高绝缘的工作服化纤工作服等#
D. 加强洒水防尘，增加空气湿度
【多选题】
井下防爆电气设备的___，必须符合防爆性能的各项技术要求。
A. 运行#
B. 维护#
C. 修理#
D. 检查
【多选题】
井下作业人员必须熟练掌握___的使用方法。
A. 自救器#
B. 矿灯#
C. 瓦斯检定器#
D. 紧急避险设施
【多选题】
井下供电“三无”指___。
A. 无合格证#
B. 无“鸡爪子”#
C. 无“羊尾巴”#
D. 无明接头
【多选题】
井下供电“三无”指的是无___。
A. 鸡爪子#
B. 羊尾巴#
C. 明接头#
D. 老鼠洞
【多选题】
井下所有___都应保持一定的存煤，不得放空。
A. 储煤库#
B. 煤仓#
C. 装煤眼#
D. 溜煤眼
【多选题】
井下空气成分中，有害气体一氧化碳CO、硫化氢H2S最高允许浓度（按体积的百分比计算）分别为___%。
A. 0.00025#
B. 0.0024#
C. 0.00066#
D. 0.0005
【多选题】
井下巷道内的电缆，沿线每隔一定距离、拐弯或者分支点以及连接不同直径电缆的接线盒两端、穿墙电缆的墙的两边都应当设置注有___的标志牌。
A. 编号#
B. 用途#
C. 电压#
D. 截面
【多选题】
井下临时抽采瓦斯泵站抽出的瓦斯可引排到___，但必须保证稀释后风流中的瓦斯浓度不超限。
A. 地面#
B. 总回风巷#
C. 一翼回风巷#
D. 分区回风巷
【多选题】
井下配电系统同时存在___电压时，配电设备上应明显的标出其电压额定值。
A. 存有#
B. 2种#
C. 2种以上#
D. 写出
【多选题】
井下高瓦斯区每班检查时间为___。
A. 接班后#
B. 班中#
C. 交班前#
D. 下班后
【多选题】
井下高压电动机、动力变压器的高压控制设备，应当具有___保护。
A. 短路#
B. 过负荷#
C. 接地#
D. 欠压释放
【多选题】
井下高压电动机、动力变压器的高压控制设备，应具有___释放保护。
A. 短路#
B. 过负荷#
C. 接地#
D. 欠电压
【多选题】
井下密闭前应设置___。
A. 棚栏#
B. 警标#
C. 说明牌#
D. 检查记录牌
【多选题】
井下照明和信号的配电装置，应具有___的照明信号综合保护功能。
A. 短路#
B. 过负荷#
C. 断相#
D. 漏电保护
【多选题】
井下煤矿的特点是：作业地点___，地下开采技术复杂，生产环节多，工作面不断移动，地质条件常有变化，不安全因素很多。
A. 空间狭窄#
B. 阴暗潮湿#
C. 高温干燥#
D. 环境条件恶劣
【多选题】
井下爆炸物品库必须有独立的通风系统，回风风流必须直接引入矿井的___中。
A. 入风井筒#
B. 总回风巷#
C. 主要回风巷#
D. 回风绕道
【多选题】
井上、下配电系统图应注明设备的___、电流等主要技术参数及其他技术性能指标。
A. 规格#
B. 型号#
C. 容量#
D. 电压
【多选题】
井口房和通风机房附近20m内，不得有___取暖。
A. 烟火#
B. 火炉#
C. 电暖气#
D. 井口房
推荐试题
【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
【单选题】
) 1. Even Tony’s six-year-old son asked him ______ smoking.
A. stops B. stopped C. to stop D. stopping
【单选题】
2.—What do you think of the lecture of Li Yang’s Crazy English?
— I think it’s _______ , but someone thinks it’s much too ________.
A. wonderful enough; bored B. enough wonderful; boring
C. enough wonderful; bored D. wonderful enough; boring
【单选题】
3.—He didn’t go to the lecture this morning, did he?
— _____ ．Though he was not feeling very well．
A. No, he didnt B. Yes; he did C. No, he did D. Yes, he didnt
【单选题】
4. If you read a lot, your life ______ full of pleasure.
A. will be B. is C. be D. was
【单选题】
5. The black bag _________ be Annas. She has a blue one.
A. should B. cant C. wouldnt D. could
【单选题】
6. Susan, why are you still here? They are all ready to start.
Im sorry, but I _________ when to start.
A. dont tell B. wasnt told C. didnt tell D. havent told
【单选题】
7.—Why dont you choose the red tie?
—For me, it doesn’t _____ my shirt very well．
A. fix B. accept C. compare D. match
【单选题】
8. — Could you tell me ______? I must find him．
— Sorry．I don’t know．But he was here just now．
A. where Tom was B. where Tom is
C. where has Tom gone D. where can I find Tom
【单选题】
9. —What did Mr Green say to you?
— What a heavy rain! How did you come here? He asked________.
A. at all B. in fact C. in surprise D. as a result
【单选题】
10. I often see Tom on the playground．When I passed the playground yesterday, I saw him ．
A. play; playing B. to play; play C. playing; to play D. playing; play
【单选题】
11. — Mum, could I have ____________ to drink?
— Oh, dear．You can only drink some water．There is _________ in the kitchen．
A. anything; else something B. anything; something else
C. something; else nothing D. something; nothing else
【单选题】
12. We all know that learning a foreign language _______ time and effort.
A. requires B. reduces C. removes D. repeats
【单选题】
13. Her son __________ Coke, but now he __________ milk．
A. is used to drinking; used to drink B. used to drink; uses to drink
C. used to drink; is used to drinking D. is used to drink; is drinking
【单选题】
14. I don’t know the teacher is talking with Miss Wang．
A. what B. whom C. who D. which
【单选题】
15.Millie does __________ that many people are thankful to her．
A. such an important and helpful job B. so important and helpful work
C. a very important and helpful job D. such an important and helpful work
【单选题】
16. I think eating more vegetables is good _______ our health.
—Yes, I agree _______ you.
A. at, to B. for, with C. to, to D. for, to
【单选题】
17. I often go on holiday with my parents _____ summer.
A. in B. at C. on D. of
【单选题】
18. I called you at 4:00 yesterday afternoon, but nobody answered.
Sorry, I ______ with my friends at that time.
A. had swum B. swam C. would swim D. was swimming
