【判断题】
生产抗冲牌号聚丙烯可选用气相法也可选用液相本体法
A. 对
B. 错
查看试卷,进入试卷练习
微信扫一扫,开始刷题
答案
B
解析
暂无解析
相关试题
【判断题】
闪蒸系统引丙烯时应先建高压,后建低压
A. 对
B. 错
【判断题】
ATMER163和TEAL可以生成稳定的络合物
A. 对
B. 错
【判断题】
隔膜泵是容积泵中较特殊的一种形式,它是靠隔膜片的来回鼓动,而吸入和排出液体的
A. 对
B. 错
【判断题】
D301实际是一个旋风分离器
A. 对
B. 错
【判断题】
任何时候D301料位不可出空,主要防串压
A. 对
B. 错
【判断题】
C301入口为气相进料
A. 对
B. 错
【判断题】
D301底出料PP中不含丙烯单体
A. 对
B. 错
【判断题】
抗冲牌号生产中,C402压力的控制是调节C402顶液相丙烯出料量
A. 对
B. 错
【判断题】
无规共聚物的聚丙烯的分子链上乙烯分子大部分是相连的
A. 对
B. 错
【判断题】
D501料位高引起的联锁是I304
A. 对
B. 错
【判断题】
环管反应器温度低会导致无规物的含量减少
A. 对
B. 错
【判断题】
预聚合反应器轴流泵启动前需要确认小环管充满液相丙烯
A. 对
B. 错
【判断题】
C302中的白油与ATMER163按1:2配制混合物,依靠P304回流循环
A. 对
B. 错
【判断题】
C301底液位由进入E303的热水量控制
A. 对
B. 错
【判断题】
在300单元共有2条闪蒸线
A. 对
B. 错
【判断题】
C302的补充物料为P107来的油和P110的ATMER163
A. 对
B. 错
【判断题】
停车时,SR301用氮气保压的目的是防止空气进入形成爆炸性混合物
A. 对
B. 错
【判断题】
D602处理时使用工厂风处理
A. 对
B. 错
【判断题】
D602需要在氮气保护下排放物料
A. 对
B. 错
【判断题】
聚丙烯装置中脱除CO采用C703A/B
A. 对
B. 错
【判断题】
D607温度控制通过(TIC60501)的调节
A. 对
B. 错
【判断题】
K502补氮气控制阀是PV50305
A. 对
B. 错
【判断题】
CY502是旋风分离器,利用离心力起到分离的效果
A. 对
B. 错
【判断题】
提高环管反应器停留时间可增加催化剂收率
A. 对
B. 错
【判断题】
丙烯中的丙二烯超标会使催化剂失活
A. 对
B. 错
【判断题】
等规高聚物,因结构比较规整,容易结晶
A. 对
B. 错
【判断题】
第一环管反应器R201温度不影响启动P201泵
A. 对
B. 错
【判断题】
提高D502料位,可以延长停留时间,增强干燥效果,所以D502料位控制越高越好
A. 对
B. 错
【判断题】
界区丙烯压力高不会影响700单元的压力
A. 对
B. 错
【判断题】
D502料位低不会影响D502中粉料的干燥效果
A. 对
B. 错
【判断题】
聚合效果不好,细粉量大是C501排出的废水中细粉含量过多的原因之一
A. 对
B. 错
【判断题】
分子量越大,MFR越大;分子量越小,MFR越小
A. 对
B. 错
【判断题】
MFR越大,物料的流动性就越好
A. 对
B. 错
【判断题】
环管工艺装置可以采用环管反应器和流化床反应器串联生产均聚、无规共聚、三元共聚、多项共聚
A. 对
B. 错
【判断题】
环管工艺装置在生产高熔融指数的产品时,可将环管降低至60℃
A. 对
B. 错
【判断题】
引起K502停的联锁是I504
A. 对
B. 错
【判断题】
D502干燥器高料位,会引发I515联锁,关LV50001
A. 对
B. 错
【判断题】
催化剂计量系统如果在自动状态,催化剂计量罐的进料阀和4.出料阀不可能同时打开
A. 对
B. 错
【判断题】
装置中如果冷冻水泵停会导致冷冻机停机
A. 对
B. 错
【判断题】
聚丙烯预聚合反应是在催化剂颗粒周围形成聚合物薄层,以7.免高速反应使催化剂颗粒破碎而生成大量细粉
A. 对
B. 错
推荐试题
【填空题】
1.China’s economic success over the past three _________has raised the living standards of hundreds of millions of Chinese citizens.
【填空题】
2.Citibank picked the chief executive of Etang.com as its first Chinese customer Thursday to open an account at its new branch in the _______Pease Hotel along Shanghai’s fabled waterfront.
【填空题】
3.The United States last Wednesday _________tariffs关税 of up to 30 percent on a range of foreign steel imports to help protect its domestic国内的industry.
【填空题】
4.Although he was raised as a Christian, he’s not really very _________.
【填空题】
5.You can distinguish between frogs ands toads蟾蜍 in the following way: frogs have _________bodies, long limbs, and a smooth skin, and toads have stouter bodies, short limbs, and dry skin.
【填空题】
6.From the airplane window I could see a _________of city streets.
【填空题】
7.Aunt Pat smiled at her little niece and _________her to eat.
【填空题】
8.Dr. Rich Hamilton is planning his own World Wide Web _________on the Internet to provide assistance to anyone who asks for medical help.
【填空题】
9.It is difficult to estimate the number of people doing part-time jobs _________
【填空题】
10.The president _________his foreign minister, Mr. Burns, to act as representative to the international conference to be held in Tokyo next month.
【填空题】
11.Advances in telecommunications have meant that it is just as easy to work from a computer _________at home as it is from a town center office.
【填空题】
12.Until the new gym is built, you have no option but _________existing buildings which may or may not suit your immediate目前的requirements.
【填空题】
1.According to some scientists, global warming _________the survival of the whole human race.
【填空题】
2.The number of visitors from parts of Scotland not including the Edinburgh area was, in fact, relatively small19%, and exceeded the number of overseas visitors16%_________.
【填空题】
3.The early Spaniards established a chain of mission _________the local population along the San Antonio River.
【填空题】
4.It was common practice then that when the store owners wanted to go on vacation they simply _________
【填空题】
5.As they didn’t have relatives or friends there they often _________around nearby malls when they got bored.
【填空题】
6.To make a birthday card, you can simply cut out some funny or pretty pictures from magazines, _________them _________a piece of card and then write your message inside.
【填空题】
7.She picked up the receiver and, _________ asking the caller to hold on, went off to tell Jack that he was wanted on the phone.
【填空题】
8.To relax himself for a little while, he rose from the computer desk, walked across the room towards the window and stretched both arms upwards and _________.
【填空题】
9.The new product has a pair of small loudspeakers fitted inside, which you can easily _________ your computer’s sound card.
【填空题】
10.Music in fact is a _________language of a non-verbal nature which is rich in expression.
【填空题】
11.This _________is designed to show at a glance how many rooms have been rented out and how many are still available.
【填空题】
12._________ glorious sunshine, the boundless stretch of corn fields looked an impressive sight.
【填空题】
1.The cook put the meat on a plate, _________it with salt and pepper, wrapped up the plate in aluminum foil铝箔 and then placed it in the oven to roast.
【填空题】
2.Every waking moment we talk to ourselves about the things we experience. Our self-talk, the thought we communicate to ourselves, _________control the way we feel and act.
【填空题】
3.John made everyone laugh when he got the words _________and referred to himself as “my husband’s wife”.
【填空题】
4.You can’t live a perfect day without doing something for someone who will perhaps never be able to _________you.
【填空题】
5.Because the Earth is a sphere, sailors _________only can view other ships to a distance of about 13 miles before those ships seem to disappear into the horizon.
【填空题】
6.Johnson dismissed _________ideas lightly as no good on several occasions.
【填空题】
7.One tends to believe whatever one repeats to oneself sufficiently often, whether the _________be true or false.
【填空题】
8.Susan told me numerous times how her sister _________children.
【填空题】
9.I don’t know what my roommate is up to because he does everything _______________, either when I am away or when I am asleep.
【填空题】
10.For economic reasons, shipbuilders have designed vessels___ that can be loaded and _________in a minimum amount of time with minimum labor.
【填空题】
11.Laugh, and the world laughs with you; _________, and you weep alone.
【填空题】
12.A national debate is now _________about the manner in which we as a society should protect our natural resources.
【单选题】
___是湿润的纤维脱水后形成的薄片型材料。
A. 安全线
B. 安全纤维
C. 纸张
D. 水印
【单选题】
纸张最核心的材料是___,在它的基础上再通过添加其他配料使其具备不同的性质。
A. 纤维
B. 安全纤维
C. 纸浆
D. 水印
【单选题】
安全纸张以___为主要的纤维来源,占90%以上。
A. 木材
B. 棉花
C. 旧报纸
D. 布碎
【单选题】
___是指在造纸生产过程中用改变纸浆纤维密度的方法制成的有明暗纹理的图形或文字。
A. 安全线
B. 安全纤维
C. 水印
D. 防伪彩点