【判断题】
环管工艺装置原料丙烯中的惰性组分增加时，催化剂活性不变
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相关试题
【判断题】
正常情况下，在线混合器管道中的丙烯流量低于联锁值时会导致联锁动作将给电子体，三乙基铝和主催化剂泵的冲程归零
【判断题】
正常生产时三乙基铝流量的控制模式一般是和进料丙烯流量投串级控制
【判断题】
环管反应器温度提高，聚合反应加速，催化剂收率和聚丙烯转化率均提高
【判断题】
当三乙基铝长时间中断时，主催化剂、给电子体、氢气可以继续进料
【判断题】
主催化剂在环管反应器中停留时间短，不会造成催化剂活性后移
【判断题】
三乙基铝巡检时应注意三乙基铝计量罐现场液位计的下降量，计量泵的冲程，有无跑冒滴漏等现象
【判断题】
丙烯进料罐主要接收两股进料、一股来自界区的新鲜丙烯，一股来自P302的回收丙烯
【判断题】
SR301的反吹气是通过减压阀控制的，压力控制到1.9MPA，并由定时器KV30101定时反吹
【判断题】
300单元的排放阀有HV30001、HV30101、HV30007、HV30401、PV30101
【判断题】
C302的废油是由P304打到D607的
【判断题】
C301的液位和FV30208投串级控制
【判断题】
给R401循环丙烯换热器E401撤热的是循环水
【判断题】
SR301、SR302需要打开处理时，需先注入CO2
【判断题】
R401是以均聚物为活性中心，产品以固态形式存在
【判断题】
序列共聚是得到抗冲PP的最有效方法，生产方案是在两个反应器分两步进行
【判断题】
一般商品化的抗冲牌号乙烯含量在6-15%之间，对应的橡胶为5-25%
【判断题】
E302的作用是维持D302的压力，开车前置换和停车倒料时，向丙烯精制系统和聚合系统提供气相丙烯
【判断题】
FIC30301的作用是调节回流量来稳定泵出口压力和流量，还有经E305冷却的丙烯回到D302中，来降低D302的温度
【判断题】
生产高抗冲共聚物时加入Atmer163的作用是使相对较小的聚合物颗粒和TEAL失活，防止聚合物在反应器壁、刮壁器轴上、通风、气体循环管道和热交换器内管中结垢
【判断题】
PA301循环气压缩机为立式往复式活塞压缩机
【判断题】
生产高抗冲共聚物提高温度是为了使Cat活性提高，保证反应进行
【判断题】
聚合物和汽化了的丙烯是以切线方向进入闪蒸罐的
【判断题】
M301的转向与物料进入D301的方向相同
【判断题】
均聚物生产之后利用催化剂的残余活性将乙烯和丙烯共聚生成乙丙橡胶和聚乙烯
【判断题】
在三元牌号生产时，C402底丙烯去界区丙烯进料线
【判断题】
在生产无规共聚物时，乙烯以气泡的形式存在环管中
【判断题】
进入预聚合反应器的丙烯温度对预聚合反应器的温度无影响
【判断题】
D106A/B配制催化剂时，配油脂时油和脂没有加人顺序，可随意加入
【判断题】
环管反应器的压力主要是靠来自PIC20301信号，调节PV20301的流量进行控制的
【填空题】
2.配制催化剂时，氮气鼓泡的作用是___。
【填空题】
3.D105中油脂的水含量应小于___。
【填空题】
4.催化剂配制程序是先加___，再加___，最后加___。
【填空题】
5.K101为___，其作用是___。
【填空题】
6.一旦TEAL着火，只能用___灭火，绝对不能用___灭火。
【填空题】
7.HV10402A/B为___，HV10403A/B为CAT从___。
推荐试题
【单选题】
Permissive parents would ________. ___
A. let their children read any books they like to
B. not let their children see any films they like to
C. not let their children read any books without first checking their contents
D. let their children see the films with their first checking
【单选题】
The fact that parents check the contents of the book or the film for their children to read or see shows __________. ___
A. the necessity of censorship
B. that many books and films are bad
C. that children need their parents to help them understand more
D. that the parents are permissive
【单选题】
Which of the following statements is NOT true?____________ ___
A. Some adults can’t tell right from wrong.
B. Censorship is compared to the law because both of them perform good service to society as a whole.
C. Censors pay attention only to genuine works of art.
D. Censorship is necessary because many books, plays and films are far from being “works of art”.
【单选题】
What does the word “corrupt” in Para.4 mean?__________ ___
A. Make morally bad.
B. Hurt.
C. Injure.
D. Damage.
【单选题】
What would be the best title of this passage?_____________ ___
A. Permissive Parents and Responsible Parents.
B. Censorship and the Law.
C. Censors Value Artistic Merits .
D. Censorship Performs Good Service to Society.
【单选题】
Lie detectors are widely used in the United States because _____________. ___
A. they can help detect people’s emotional stress
B. they can help detect people's physiological changes
C. they can help find out whether a person is telling the truth or not
D. they can measure the subject’s electrical resistance
【单选题】
According to the passage, we know that Britain______________. ___
A. will adopt lie detectors widely
B. will adopt lie detectors on a smaller scale
C. adopt lie detectors
D. has not decided whether to adopt lie detectors or not
【单选题】
The tests themselves are by no means free from error..." (Line 1-2.Para.3) means ____________. ___
A. the tests definitely have no error
B. the tests sometimes make mistakes
C. the polygraphers do not make mistakes
D. the polygraphers can avoid error by using some techniques
【单选题】
Which of the following is true? ________________ ___
A. The tests are conducted by qualified polygraphers.
B. Innocent people may blush or stammer when questioned.
C. Guilty people can definitely be found out by answer questions
D. Guilty people may escape by refusing to answer questions.
【单选题】
What troubles lie detector researchers most is that _______________. ___
A. innocent people are convicted crimes
B. innocent people will learn to tell lies
C. lie detectors may cause industrial unrests
D. lie detectors are sometimes not dependable
【单选题】
In the passage the author's attitude towards "mixed-ability teaching" is _______. ___
A. critical
B. questioning
C. approving
D. objective
【单选题】
By "held back" (Line 1) the author means _____. ___
A. made to remain in the same classes
B. forced to study in the lower classes
C. drawn to their studies
D. prevented from advancing
【单选题】
The author argues that a teacher's chief concern should be the development of the student's _________. ___
A. personal qualities and social skills
B. total personality
C. learning ability and communicative skills
D. intellectual ability
【单选题】
Which of the following is NOT MENTIONED in the third paragraph? __________ ___
A. Group work gives pupils the opportunity to learn to work together with others.
B. Pupils also learn to develop their reasoning abilities.
C. Group work provides pupils with the opportunity to learn to be capable organizers.
D. Pupils also learn how to participate in teaching activities.
【单选题】
The author's purpose in writing this passage is to ______. ___
A. argue for teaching bright and not-so-bright pupils in the same class
B. recommend pair work and group work for classroom activities
C. offer advice on the proper use of the library
D. emphasize the importance of appropriate formal classroom teaching
【单选题】
According to the author, the deaths among youth are mainly caused by _____. ___
A. traffic accidents
B. smoking-related diseases
C. murder
D. all of these
【单选题】
Every day there are over_____high school students who will become regular smoker. ___
A. 75
B. 23
C. 30
D. 3000
【单选题】
By "dropout" the author means______. ___
A. students who failed the examination
B. students who left school
C. students who lost their way
D. students who were driven out of school
【单选题】
The reason for declining adolescent smoking is that ________. ___
A. NCI has taken effective measures
B. smoking is prevented among high school seniors
C. there are many smokers who have died of cancer
D. not stated
【单选题】
What is implied but not stated by the author is that ________. ___
A. smoking rates among youth have declined very little
B. there are now more female than male smokers among high school seniors
C. high smoking rates are due to the increase in wealth
D. smokers at high school are from low socio-economic backgrounds
【单选题】
According to the passage, which of the following is NOT a disadvantage of part time education? _______________ ___
A. It requires some break in one's career.
B. It tends to last too long for many people to complete a degree program.
C. It affects one's career.
D. It gives the student less time to share with the family.
【单选题】
Which of the following is NOT an advantage of distance learning? _________ ___
A. The student may choose his or her own pace.
B. The student may study at any time to his or her convenience.
C. They can pursue their chosen career while studying.
D. Their tutorial assistance comes through regular airmail, telephone, etc.
【单选题】
What benefit will distance learning program bring to a business? __________ ___
A. Recruitment of more talented people.
B. Good image of the business.
C. Better cooperation with universities.
D. Further training of employees and business growth.
【单选题】
Good distance learning program have the following characteristic EXCEPT______. ___
A. distance learning course is the same as students taking courses in campus
B. the degree should be same as on campus study
C. professor-student relationship is strictly one to one all through the course
D. includes subject evaluation tool
【单选题】
What benefit will distance learning bring to an employee of a business? ___________ ___
A. Professional growth.
B. Good relationship with the employer.
C. Good impression on the employer.
D. Higher salary.
【单选题】
In the first paragraph, what does "plastic money" (Line 6, Para.1) refer to? ______ ___
A. Dollars.
B. Online payment.
C. Credit cards.
D. Coins.
【单选题】
Which of the following is NOT true about credit cards? ____________ ___
A. Shopkeepers, among others, object to the use of credit cards because they add on the cost of the merchandise.
B. Credit card holders actually pay for their goods after the purchase has been completed.
C. The national company enjoys extensive growth because of the use of credit cards.
D. It has had the effect of increasing consumption.
【单选题】
What is the disadvantage of credit cards? _____________ ___
A. It may lead to the overgrowth of the national economy.
B. The delay in the payment of shopping goods may bring damage to shopkeepers' profits.
C. Some people may intentionally purchase goods that they cannot possibly afford.
D. Those who pay by cash at the purchase will have to pay for the cost added to the product as the interest charge of credit cards.
【单选题】
What is the main topic of the text? ________________ ___
A. Advantages and Disadvantages of Credit Cards.
B. Economic Growth Backed up by the Use of Credit Cards.
C. It can encourage great sums of consumption.
D. Credit Cards Make Life
E. asier.
【单选题】
The author's attitude towards credit card is.______________. ___
A. agreeable
B. neutral
C. humorous
D. oppositional
【单选题】
不含有割地内容的不平等条约是___。
A. 《南京条约》
B. 《北京条约》
C. 《马关条约》
D. 《辛丑条约》
【单选题】
在甲午战争后，严复翻译的《天演论》所宣传的重要思想是___。
A. “师夷长技以制夷”
B. “中学为体，西学为用”
C. “天下兴亡，匹夫有责”
D. “物竞天择，适者生存”
【单选题】
火烧圆明园发生在___期间。
A. 鸦片战争
B. 第二次鸦片战争
C. 甲午战争
D. 八国联军侵华战争
【单选题】
规定允许外国在中国办工厂的条约是___。
A. 《南京条约》
B. 《北京条约》
C. 《马关条约》
D. 《辛丑条约》
【单选题】
1895 年，日本强迫清政府签订___，割去台湾全岛及所有附属岛屿和澎湖列岛。
A. 《南京条约》
B. 《北京条约》
C. 《马关条约》
D. 《辛丑条约》
【单选题】
近代以来中国反侵略战争失败的最根本原因是___。
A. 帝国主义的强大
B. 社会制度的腐败
C. 经济技术的落后
D. 中国军队军事素质低下
【单选题】
鸦片战争以清政府的失败而告终。1842 年 8 月 29 日，清政府与英国签订了中国近代史上的第一个不平等条约是___。
A. 中英《虎门条约》
B. 中英《南京条约》
C. 中美《望厦条约》
D. 中法《黄埔条约》
【单选题】
在近代中国，规定中国向列强支付赔款最多的条约是___。
A. 《南京条约》
B. 《北京条约》
C. 《马关条约》
D. 《辛丑条约》
【单选题】
到___的订立为止，庞杂的不平等条约体系已宣告中国半殖民地社会的完全形成。
A. 《天津条约》
B. 《北京条约》
C. 《辛丑条约》
D. 《马关条约》
【单选题】
德国元帅瓦德西说：“无论欧、美、日本各国，皆无此脑力与兵力，可以统治此天下生灵四分之一，故瓜分一事，实为下策。”这表明___。
A. 帝国主义已灭亡中国
B. 帝国主义之间相互勾结
C. 帝国主义瓜分中国图谋的破产
D. 帝国主义之间的矛盾
