相关试题
【单选题】
关于精馏塔灵敏板、釜温提不起来的原因，下列叙述不正确的是___。
A. 塔釜重组分多
B. 再沸器结垢
C. 回流量过大
D. 中沸器加热量大
【单选题】
精馏塔塔釜分析不合格，轻组分浓度高，下列说法不正确的是___。
A. 塔釜液面过低
B. 灵敏板温度低
C. 回流量过大
D. 塔釜加热量大
【单选题】
碳二加氢反应器温度上涨，但不是很快，最有效的处理方法是___。
A. 一发现温度上升较快即关闭氢气阀
B. 停止入口加热
C. 降低入口温度
D. 适当注入粗氢
【单选题】
关于碳二加氢反应器飞温的处理方法，下列说法正确的是___。
A. 降低氢炔比
B. 降低入口温度
C. 如备用台飞温则关紧各进出口氢气阀门
D. 碳二加氢反应器泄压至火炬
【单选题】
碳二加氢反应器飞温的处理方法正确的是___。
A. 全开段间冷却器冷却水
B. 降低入口温度
C. 反应器按SD2停车
D. 增加一氧化碳降低催化剂活性
【单选题】
碳二加氢反应器催化剂中毒时下列处理方法正确的是___。
A. 降低反应器入口温度
B. 压缩调整碱洗至合格
C. 降低氢炔比
D. 切换裂解气干燥器
【单选题】
碳二加氢反应器催化剂中毒的处理方法不正确的是___。
A. 提高反应器入口温度
B. 压缩调整碱洗至合格
C. 降低氢炔比
D. 碱洗合格后切换裂解气干燥器及碳二加氢反应器
【单选题】
当乙烯精馏塔产品乙烷超标时，正确的处理方法是___。
A. 调整乙烯精馏塔的操作
B. 调整碳二加氢反应器的操作
C. 调整脱乙烷塔的操作
D. 调整脱甲烷塔的操作
【单选题】
当丙烯产品分析不合格MAPD超标时，处理方法正确的是___。
A. 调整凝液汽提塔的操作
B. 调整脱丙烷塔的操作
C. 调整脱丁烷塔的操作
D. 调整碳三加氢反应器的操作
【单选题】
当碳四产品不合格，碳三含量超标时，处理方法正确的是___。
A. 调整脱丙烷塔的操作
B. 调整丙烯精馏塔的操作
C. 调整碳三加氢反应器的操作
D. 调整丙烷精制塔的操作
【单选题】
当乙烯精馏塔产品分析不合格，乙炔超标时，处理方法正确的是___。
A. 调整乙烯精馏塔的操作
B. 调整碳二加氢反应器的操作
C. 检查脱乙烷塔的操作是否正常
D. 调整脱甲烷塔的操作
【单选题】
碳二加氢反应器出口乙炔分析不合格正确的处理方法是___。
A. 提高入口温度
B. 降低入口温度
C. 提高脱乙烷塔顶温
D. 减少氢气量
【单选题】
仪表失灵后的处理方法正确的是___。
A. 保持阀全开
B. 关闭该阀
C. 将该阀切成手动操作稳定装置运行并联系仪表修理
D. 通过旁路来稳定装置运行
【单选题】
乙烯装置发生一般性着火事故，消防车队到达现场时，此时指挥者应为___。
A. 消防支队领导
B. 班长
C. 值班主任
D. 车间主任
【单选题】
装置发生一般性着火事故时，操作人员处理步骤中最准确的是___。
A. 第一时间向公司消防支队火警台报警
B. 第一时间向厂部及车间领导汇报事故情况
C. 第一时间操作人员对着火点进行扑救和控制
D. 通过现场呼叫器和火警报警系统把第一信息反馈到中央控制室
【单选题】
装置冷却水故障，分离系统作全面紧急停车处理，下列处理正确的是___。
A. 冷箱泄压
B. 碳二加氢反应器保温保压
C. 乙烯精馏塔全回流运转
D. 各塔停止加热，塔压由放火炬阀控制
【单选题】
当裂解气压缩机停车，而丙烯制冷压缩机正常运转时，分离处理正确的是___。
A. 碳二加氢反应器保温保压
B. 乙烯精馏塔全回流运转
C. 脱甲烷塔紧急停车
D. 丙烯精馏塔紧急停车
【单选题】
裂解气压缩机停车后，对分离系统的处理不正确的是___。
A. 碳二加氢反应器紧急停车
B. 甲烷化反应器紧急停车
C. 碳三反应器紧急停车
D. 停止罐区乙烯外送
【单选题】
裂解气压缩机停车后，对分离系统的处理错误的是___。
A. 冷箱系统紧急停车处理
B. 乙烯精馏塔全回流运转
C. 丙烯精馏塔全回流运转
D. 脱丙烷塔全回流运转
【单选题】
裂解气压缩机停车后，对分离系统的处理不正确的是___。
A. 碳二加氢反应器紧急停车
B. 甲烷化反应器紧急停车
C. 碳三反应器紧急停车
D. 脱甲烷塔汽提操作
【单选题】
乙烯压缩机停车后，对分离系统的处理正确的是___。
A. 停乙烯塔运行
B. 停丙烯塔运行
C. 停火炬系统
D. 丙烯外送停止
【单选题】
乙烯制冷压缩机停车后，对分离系统的处理正确的是___。
A. 碳二加氢反应器紧急停车
B. 甲烷化反应器紧急停车
C. 碳三反应器紧急停车
D. 维护膨胀机正常运行
【单选题】
乙烯制冷压缩机停车后，对分离系统的处理不正确的是___。
A. 脱甲烷塔汽提操作
B. 停碳二加氢
C. 维护膨胀机正常运行
D. 立即停甲烷化反应器
【单选题】
碳二加氢反应器因故停车，对分离系统处理正确的是___。
A. 乙烯精馏塔全回流运转
B. 脱乙烷塔紧急停车
C. 分离热区停车处理
D. 停止所有产品外送
【单选题】
碳二加氢反应器因故停车，下列处理不正确的是___。
A. 乙烯精馏塔全回流运转
B. 低压脱丙烷塔正常运行
C. 脱乙烷塔保证灵敏板温度，塔釜产品正常外送
D. 脱乙烷塔回流运行
【单选题】
甲烷化反应器因故停车，如分离系统有外供氢气，则下列处理正确的是___。
A. 乙烯精馏塔全回流运转
B. 碳三反应器停止注氢
C. 碳二加氢反应器停车
D. 分离系统只对甲烷化系统处理，其余正常运转
【单选题】
甲烷化反应器停车后，分离系统如没有外供氢气，则下列处理正确的是___。
A. 碳二加氢反应器停车
B. 乙烯精馏塔全回流
C. 碳三加氢反应器停止注氢
D. 丙烯精馏塔正常运行
【单选题】
氢气干燥器进料阀填料处漏氢气，现场人员一次处理正确的是___。
A. 接氮气稀释
B. 用蒸汽保护
C. 不做任何处理
D. 通知班长
【单选题】
丙烯精馏塔塔顶冷凝器内漏时，处理方法正确的是___。
A. 换热器切出检修
B. 不需处理
C. 降负荷即可
D. 停车检修
【单选题】
正常情况下发现冷泵机械封轻微泄漏时，工艺上处理正确的是___。
A. 将泵切出系统倒空，上报检修
B. 用水冲洗
C. 用氮气保护
D. 无须处理
【单选题】
精馏塔顶温高正确的处理方法是___。
A. 适当增大回流量
B. 增加进料量
C. 减小回流
D. 提高灵敏板温度
【单选题】
精馏塔顶温高正确的处理方法是___。
A. 降低塔釜液面
B. 提高加热量
C. 减小塔顶回流
D. 减小加热量
【单选题】
精馏塔塔釜液面空时正确的处理方法是___。
A. 减小进料量
B. 减小回流
C. 减小塔釜采出量
D. 提高塔釜加热
【单选题】
精馏塔塔釜液面空时不正确的处理方法是___。
A. 减小加热量
B. 增加回流
C. 减小塔釜采出量
D. 提高塔釜加热
【单选题】
精馏塔压差高的处理方法正确的是___。
A. 降低采出量
B. 降低釜液面
C. 保证产品质量的同时，适当减小回流
D. 提高灵敏板温度
【单选题】
精馏塔压差高的处理方法不正确的是___。
A. 适当增大采出量
B. 适当提塔釜液面
C. 保证产品质量的同时，适当减小回流
D. 适当降加热
【单选题】
1标准大气压等于___帕斯卡。
A. 98100
B. 10000
C. 101330
D. 103300
【单选题】
关于绝对压强、表压、大气压、真空度的关系，下列表达式正确的是___。
A. 绝对压强=表压-大气压
B. 绝对压强=大气压-表压
C. 真空度=大气压强-绝对压强
D. 表压=大气压强-绝对压强
【多选题】
下列描述正确的是:___
A. 可燃液体的闪点越低，火灾危险越小。
B. 可燃物质的自燃点越高，则火灾危险性越大。
C. 可燃液体的闪点越低，火灾危险越大。
D. 可燃物质的自燃点越高，则火灾危险性越小
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
