【单选题】
民用黑火药的一般配比是硝酸钾:硫磺:木炭=___。
A. 65:20:15
B. 75:10:15
C. 70:15:15
D. 80:10:10
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相关试题
【单选题】
一般情况下,一个雷管能起爆绑扎在它四周的___根导爆索。
【单选题】
在导爆索起爆网路中,支线与主线的连接应采用三角形连接,其与传爆方向的夹角应小于___。
A. 70°
B. 80°
C. 90°
D. 100°
【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】
起爆电源应指定专人看守,___应由负责人掌握,不到起爆时不准发给起爆人员。
A. 欧姆表
B. 起爆器的转柄
C. 起爆线
D. 大门钥匙
【单选题】
瞬发电雷管的电点火装置可分为___和引火头式两种。
A. 组装式
B. 分立式
C. 转盘式
D. 直插式
【单选题】
通常把炮孔直径与装药直径的比值称为装药的不耦合系数,该系数___1。
A. 小于
B. 等于
C. 大于
D. 大于等于
【单选题】
当介质性质、炸药品种相同时,随着自由面的增多,炸药单耗将___。
A. 明显降低
B. 增加
C. 变化不大
D. 上升
【单选题】
作业期间安全警戒的范围是___与周围地区的分界线。
A. 爆破器材存放区
B. 作业人员生活区
C. 运输车辆停放区
D. 爆破作业区
【单选题】
用爆破法处理卡在溜煤眼中的煤与矸石时,每次爆破只准使用一个煤矿许用电雷管,最大装药量不得超过___克。
A. 350
B. 400
C. 450
D. 500
【单选题】
处理盲炮前应由爆破技术负责人定出___,并在该区域边界设置警戒,处理盲炮时无关人员不许进人警戒区。
A. 警戒范围
B. 方法
C. 措施
D. 作业地点
【单选题】
在有瓦斯或煤尘爆炸危险的煤(岩)层中爆破时,必须采用___爆破。
【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】
在煤矿井下掘进爆破中,通电后装药不响时,如使用瞬发电雷管,爆破员至少等___分钟才可沿线路检查,找出不响的原因。
【单选题】
在隧道对头掘进爆破中,当两个工作面相距___时,只准从一个工作面向前掘进,并应在双方通向工作面的安全地点派出警戒。
A. 10m
B. 12m
C. 15m
D. 18m
【单选题】
在两个平行巷道掘进中,当间距小于___时,如果一个工作面需要进行爆破,应通知相邻巷道的全体人员撤至安全地点。
A. 10m
B. 15m
C. 25m
D. 20m
【单选题】
拒爆是指雷管或炸药未被___的现象,俗称盲炮、瞎炮、哑炮。
【单选题】
洞库是由山体表面向山体内___掘进的用于储存民用爆炸物品的硐室。
【单选题】
井下爆破器材发放硐室存放的炸药不应超过___t。
【单选题】
装药完成后,应当将剩余的爆破器材撤离爆破作业面至___,由保管员检查清点后保管。
A. 临时存放点
B. 附近工棚
C. 保护建筑物
【单选题】
民用爆炸物品储存库的技防设施主要包括___等防范系统。
A. 入侵报警、视频监控
B. 入侵报警、库房
C. 视频监控、值班室
【单选题】
民爆库房的内层门应该采用加装___的通风栅栏门。
【单选题】
井下库对炸药的储存量不应超过___昼夜的生产用量。
【单选题】
检验爆破器材应在自然温度条件下进行,低温不低于零下30℃,高温不高于___℃。
【单选题】
___和黑火药可置于容器中用溶解法销毁。
【单选题】
临时存放爆破器材的船只,在存放爆破器材的船舱里,应使用移动式蓄电池提灯或___照明。
【单选题】
爆破员、安全员、保管员的文化程度应在___以上。
【单选题】
我国在___就出现了比较完整的黑火药配方(用硫磺、硝石和木炭3种组分配制)。
【单选题】
爆炸性危险物质被盗、被抢或者丢失,故意隐瞒不报的,处___拘留。
A. 五日以上
B. 五日以上十日以下
C. 十日以下
【单选题】
爆破作业单位申请购买民用爆炸物品的,应当向所在地县级人民政府公安机关提出购买申请,并提交___等有关材料。
A. 《民用爆炸物品购买许可证》
B. 《爆破作业人员许可证》
C. 《爆破作业单位许可证》
【单选题】
雷电、暴雨雪来临时,应停止爆破作业,所有人员应___撤到安全地点。
【单选题】
销售民用爆炸物品的企业,应当将购买单位的许可证、银行账户转账凭证、经办人的身份证明复印件保存___备查。
【单选题】
根据《刑法》,非法制造、买卖、运输、邮寄、储存爆炸物的,处___有期徒刑。
A. 三年以上
B. 十年以下
C. 三年以上十年以下
【单选题】
单位卡、人员卡都必须先通过___验证后才能正常进行操作。
【单选题】
民用爆炸物品最小计数单位和基本包装单元上应同时有___和登记标识。
【单选题】
热感度指在___的作用下炸药发生爆炸的难易程度。
【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】
电子雷管采用三重密码保护,即爆破员、___各自独立设置密码,三重密码对应起爆。
A. 导通表与起爆器
B. 导通表与雷管
C. 起爆器与雷管
D. 保管员与雷管
【单选题】
按照炸药在实际应用中的作用可将炸药分为:起爆药、___、火药及烟火剂四大类。
A. 乳化炸药
B. 猛炸药
C. 岩石炸药
D. 硝酸铵
【单选题】
在煤矿许用电雷管中,雷管管壳可使用___和覆铜壳,不能使用铝壳。
A. 铝壳
B. 钢壳
C. 有机玻璃
D. 塑料壳
推荐试题
【单选题】
津液变成汗、尿是气的何种功能___
A. 推动作用
B. 温照作用
C. 防御作用
D. 气化作用
E. 固摄作用
【单选题】
津液输布的主妥通道为___
A. 经络
B. 赎理
C. 尿道
D. 三焦
E. 骨
【单选题】
气的运行受阻,运行不利,称为___
A. 气滞
B. 气结
C. 气闭
D. 气机不畅
E. 气机失调
【单选题】
与人的睡眠有密切关系的气是___
A. 宗气
B. 元气
C. 卫气
D. 营气
E. 牌气
【单选题】
机体内物质转化和能量转化过程有赖于气的___
A. 推动作用
B. 温熙作用
C. 固摄作用
D. 气化作用
E. 防御作用
【单选题】
下列哪一项是人体正常水液的总称___
A. 体液
B. 阴液
C. 津液
D. 津
E. 液
【单选题】
津液化为汗液排出体外,主要依赖于什么作用___
A. 心主血脉
B. 肺主宣发
C. 肾主气化
D. 肝主疏泄
E. 脾主统摄
【单选题】
下列除哪一项外均是血液正常运行所必需的条件___
A. 血液充盈
B. 脉道通畅
C. 肺脾肾功能正着
D. 心气充沛
E. 三焦通利
【单选题】
气能生津的机理是___
A. 气为生津的物质基础
B. 气为生津的动力
C. 气为生津的物质基础和动力
D. 气能化生精气
E. 气能生血,血能化津
【单选题】
血和津液生成的共同物质来源是___
A. 水谷精微
B. 宗气
C. 精
D. 元气
E. 营气
【单选题】
昼行于阳,夜行于阴的气是___
A. 营气
B. 卫气
C. 元气
D. 宗气
E. 肾气
【单选题】
“夺血者无汗”的生理基础是___
A. 肝肾同源
B. 乙类同源
C. 津血同源
D. 精血同源
E. 以上均不是
【单选题】
Q1: What does the man suggest that the woman do this weekend?___
A. Read J .K .Rowling's first book .
B. Go to buy a new Harry Potter book .
C. Watch BBC news about J .K .Rowling .
D. Take her cousin to see a new Harry Potter movie .
【单选题】
Q2: Where did J. K. Rowling come up with the idea for Harry Potter?___
A. At a cafe .
B. On a train .
C. At a cinema .
D. In a bookstore .
【单选题】
Q3: What are J. K. Rowling’s future plans?___
A. She won't write any more books .
B. She will write more magic stories .
C. She hasn't said anything about her future plans .
D. She said she would work on more serious subjects .
【单选题】
Q4: What are the two speakers mainly talking about?___
A. J.K. Rowling's secret .
B. J .K .Rowling's writing plan .
C. A new book by J .K.Rowling.
D. An interview with J .K .Rowling .
【单选题】
Q1: What happened when Stephen tried to remove a bottle of milk from the refrigerator?___
A. He broke the milk bottle .
B. He fell down on the floor .
C. He made a mess inside the refrigerator .
D. He spilled the milk over the kitchen floor .
【单选题】
Q2: What did Stephen’s mother do when she came into the kitchen?___
A. She gave him a long lecture .
B. She shouted at him in anger .
C. She enjoyed the wonderful mess .
D. She cleaned up the mess with him .
【单选题】
Q3: What did Stephen’s mother teach him later?___
A. How to do an experiment .
B. How to carry a milk bottle .
C. How to clean up spilled milk .
D. How to avoid making mistakes .
【单选题】
Q4: What did Stephen learn from this experience?___
A. Mistakes can become learning opportunities .
B. Mistakes are just like scientific experiments .
C. One should sometimes make mistakes .
D. One should try to avoid making mistakes .
【单选题】
Q1: Why is surfing the man’s favorite activity?___
A. Because he likes the sunny weather.
B. Because he wants to challenge himself .
C. Because it can help solve his sleeping problem .
D. Because it can help him forget all his troubles .
【单选题】
Q2: What is the woman going to do this weekend?___
A. To go sailing .
B. To go surfing .
C. To go to the beach .
D. To go to her nephew's .
【单选题】
Q3: What does the woman love doing?___
A. Going to visit relatives.
B. Enjoying the warm sun on the beach .
C. Building sand castles with her niece and nephew .
D. Playing in the sand and jumping in the waves .
【单选题】
Q4: What does the man remember doing with his brothers?___
A. Surfing in the sea .
B. Collecting seashells .
C. Building sand castles .
D. Jumping in the waves .
【单选题】
Q1: According to the survey, what percentage of British adults watched TV in theirfree time?___
A. 89 percent .
B. 84 percent .
C. 76 percent .
D. 71 percent .
【单选题】
Q2: Which age group would be the most likely to visit their friends and relatives?___
A. People aged 16 to 24
B. People aged 25 to 34 .
C. People aged 16 and over .
D. People aged 55 and over .
【单选题】
Q3: What does the speaker say about listening to music as a leisure activity for British people?___
A. People aged 16 to 24 preferred listening to music most .
B. It was getting more and more popular among the British people .
C. It was the third most popular activity among people aged 55 and over .
D. People aged 25 to 34 listened to music more often than those aged 16 to 24 .
【单选题】
Q4: According to the survey, how are leisure activities related to age?___
A. Older people go out to pubs more often . frequently .
B. Younger people go to the cinema less frequently.
C. Older people spend more time reading and gardening .
D. Younger people spend less time visiting friends and family .
【单选题】
Q1: Why was the girl excited?___
A. She is going to have a lot of vanilla ice cream .
B. She won the spelling competition at her school .
C. She is going to the state capital for a competition .
D. She "excellence"correctly,but others didn't .
【单选题】
Q2: What happened when the man was 13 years old?___
A. His family moved to Sacramento to settle down .
B. His family bought him a new suit and a new tie .
C. He went to Sacramento for a spelling competition .
D. He won the first prize in the state spelling competition .
【单选题】
Q3: Why did the man’s mom give him a big hug?___
A. To make him feel better after he lost the first prize .
B. To apologize for not buying him some ice cream .
C. To wish him good luck in the next competition .
D. To congratulate him on winning the first prize .
【单选题】
Q4: What color is the girl going to wear for her next competition?___
A. Red .
B. Blue .
C. Green .
D. Yellow .
【单选题】
Q1: What is this passage mainly about?___
A. Superstitions and science .
B. Tips on how to have good luck .
C. Superstitions in the United States .
D. Rational and superstitious societies .
【单选题】
Q2: According to the passage, what is considered as bad luck?___
A. Walking under a ladder .
B. Dreaming of a black cat .
C. Hanging a mirror in the house .
D. Stepping on one's own shadow .
【单选题】
Q3: Why is it considered bad luck to see a black cat crossing one’s path?___
A. Because black cats look like witches . e witches .
B. Because black cats were thought to be witches .
C. Because black cats bring seven years of bad luck .
D. Because black cats are hard to notice in darkness .
【单选题】
Q4: According to the passage, what will bring people good luck?___
A. Breaking a mirror on purpose .
B. Catching a falling leaf on one's birthday .
C. Finding a on the ground and picking it up .
D. Dreaming of blowing out the candles in one blow .
【单选题】
Q1: How long will the woman spend on her way to and from work by high-speed train?___
A. 4 hours .
B. 2 hours .
C. 1.5 hours .
D. 45 minutes .