相关试题
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分离热区塔釜再沸器容易结焦是因为塔釜液中含大量双烯烃，而且高温下双烯烃易聚合
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正常操作中如果加热量提得过快，会造成塔压联锁
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精馏塔进料组成变化不会造成塔顶分析不合格
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精馏塔釜采出量太小，也会造成塔釜轻组分浓度超标
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塔釜采出过大时，易造成精馏塔塔釜液面空
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紧急停车时，要尽可能保证产品外送的正常
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在处理局部停车时要注意停车部分与全装置各系统的联系，以免干扰其余部分的正常运转而造成不必要的损失
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（）当出现低温用户冻堵时，应在冻堵下游处注甲醇
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裂解气干燥器出口水分提前不合格则对分子筛进行更换
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发生一氧化碳中毒后，要立即将病员撤离污染区域，必要进施行人工呼吸，输氧，立即请医生治疗
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精馏塔如塔釜重组份较多也易造成加热不良，此时应适当排放
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精馏塔加热量过大，会造成塔釜空，应适当减小塔釜加热量
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碳二加氢反应器催化剂中毒，则应提高入口温度，同时要求碱洗调整，如中毒较深，则切出反应器
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仪表失灵后，应立即投手动稳定工艺操作，并找仪表工修理
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一般性着火事故应由值班主任报火警并组织操作人员扑救控制
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紧急停车后，冷箱系统应尽可能保温保压保液位，以便下一步开车
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当裂解气压缩机因故停车后，乙烯精馏塔也要紧急停车
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当压缩片区乙烯制冷压缩机因故停车，其它系统运转正常时，分离系统也要作全面紧急停车处理
【判断题】
当压缩片区乙烯制冷压缩机因故长时间停车，分离系统冷箱温度较高，甲烷化反应温度上升较快，分离系统局部紧急停车
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裂解气压缩机停车后乙烯精馏塔只能停止运行
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乙烯制冷压缩机停车后,甲烷化系统必须停车
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乙烯制冷压缩机停车后,碳二加氢反应器必须停车
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乙烯制冷压缩机停车后,应适当打开开工氢（氢气并低压甲烷线）,维持冷箱温度,若冷箱温度过高,分离系统作紧急停车,但乙烯精馏塔可以全回流运转
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碳二加氢反应器因故停车,高压脱丙烷塔应稳定灵敏板温度,保证塔釜物料正常送出
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C-400A/B紧急停按钮分别位于中控2个，现场控制盘2个
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精馏塔如果是多股进料，顶温高可以通过调节各股进料配比来调节
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在试验和推广新技术、新工艺、新设备、新材料的同时，应制定相应的安全措施，经本单位分管生产的领导（总工程师）批准后执行
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新参加电气工作的人员、实习人员和临时参加劳动的人员（管理人员、非全日制用工等），应经过安全生产知识教育后，方可下现场单独工作
【判断题】
经常有人工作的场所及施工车辆上应配备急救箱，存放急救用品，并应指定专人定期检查、补充或更换
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装有SF6设备的配电站，应装设强力通风装置，风口应设置在室内底部，其电源开关应装设在门内
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配电站、开闭所、箱式变电站的门应朝向内开
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井、坑、孔、洞或沟（槽），应覆以与地面齐平而坚固的盖板。检修作业，若需将盖板取下，应设临时围栏，并设置警示标识，夜间还应设黄灯示警
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现场勘察后，现场勘察记录应送交工作负责人及相关各方，作为填写、签发工作票等的依据
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开工前，工作负责人或工作票签发人应重新核对现场勘察情况，发现与原勘察情况有变化时，应重新填写、签发工作票
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填用配电第一种工作票的工作：配电工作，需要将高压线路、设备停电者
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为了清晰反映构成所有者权益各组成部分当期的增减变动情况，所有者权益变动表采用矩阵形式列示
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销售净利率是20%，资产周转率是1次，权益乘数是2，则净资产收益率是40%
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一般认为，资本保值率越高，表明企业的资本保全状况越好，所有者权益增长越快，债权人的债务越有保障
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如果企业的负债资金的利息率低于其资产报酬率，则提高资产负债率可以增加所有者权益报酬率
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杜邦分析体系是利用各主要财务比率之间的内在联系，综合分析企业财务状况的方法。建立财务分析指标体系
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沃尔比重评分法是将选定的财务比率用线性关系联系起来，并分别给定各自的分数比重，然后通过与标准比重进行比较，确定各项指标的得分及总体指标的累积分数，从而对企业的信用水平做出评价的方法
【填空题】
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1 In our class,most discussions and activities take place in assigned small groups,These groups provide a supportive and safe environment that （） learning
【填空题】
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9 As the finance ministry rejected the defor its "lack of clarity",it[ ]complaint with the Europear Commission that this deal was against the law
【填空题】
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5 State governments and the colleges themselves have [ ] financial help to students with special abilities and those with financial needs
【填空题】
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10 Dogs cannot distinguish the color of trafficlights, so the master must make the decision of when it is safe to [ ] across the road
【填空题】
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6 The committee agreed that his papers
[ ] a wider circulation because of their essential and fundamental interest to a larger audience.
【填空题】
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1 Because women often restrict their diet
In an effort to control weight,they may
Not consume enough iron-rich food and
( ) experience an iron Deficiency.
【填空题】
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8 Americans defend the right to obtain a gun and they have[ ] been willing to turn a blind eye to the harm that people owning guns have caused
【填空题】
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7 The anger and frustration [ ] by the local people who do not understand what is happening to them will be a terrible and dangerous force
【填空题】
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2 Some reform advocates ignore the impact of
Class size on student achievement,and they
are ( ) what they call as a Priority:teacher effectiveness.
【填空题】
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3 Because of easy access to the Internet,the
New breakthrough tq create something
Truly creative ( ) happen anytime now.
【填空题】
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4 Indeed,if teachers want to( ) how far students might get in life, a better measurement than grades might be how hard the students try.
【填空题】
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5 Nature has( ) these animals ( ) a capacity for not showing Fear.
【填空题】
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6 During the weeks of discussion,delegations
from groups who are interested in the
Resolution may call on representatives to
( ) their point of view.
【填空题】
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7 Plato was a superb writer,and his works are
Part of the world’s great literature.Most of
His existing work is ( )Dialogs and letters.
【填空题】
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8 Young people should enter into a broad
Flexible training program,through which
They can learn a lot and be ( ) their future careers.
【填空题】
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9 The young man is very happy and proud to
be ( ) the old professor because he always feeIs great when talking With him.
【填空题】
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10 One day they passed more than 20 villages ( ),and some of these are Said to have stretched for six miles or more.
【填空题】
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7 Being asingle parent,there is no way for her
to ( ) the time and energy she has
devoted to her children for the past 10 years.
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8 It is essential that you start by listening because one of the main ( ) teenagers and their parents face in forming positive relationships is that neither listens to the other.
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9 We all know the dangers of an earthquake: the ( ) to buildings,the troubles can be caused by falling trees,and the terror occurs when the earth actually opens uip.
【填空题】
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10 Not until recently have we realized that the increasing world population may lead to a potential gloomy ( ) for humanity starvation.
【填空题】
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2 It is the development strategy/of the company to ( ) its overseas expansion in order to take a slice of the world market
【填空题】
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3 Nearly six million people go to see the Mona
Lisa every year,attracted by the ( )of her smile.When you're not lodking at her, she seems to be smiling;when you look at her,she stops.
【填空题】
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4 To live with a family whose native language is English is the ideal way to further improve one's English and to gain ( )into its culture.
【填空题】
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5 There is a real need to ( ) academic
achievement in schools and help with the
development of a student's overall character.
【填空题】
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6 Einstein said his scientific discoveries grew
from his imagination rather than from( ),
reason and language.
【填空题】
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1 When the police caught up with him, Mr.Foster had to [ ] that he'd broken the speed limit.
【填空题】
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2 Whenever my boss makes a decision that I don't agree with, I tell him what I really think, though it's [ ] to make him happy by telling him his ideas are always right
【填空题】
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3 As can be probably perceived, a manned tip to Mars may soon[ ] since scientists have achieved the manned moon mlssion
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4 A number of countries are [ ]their efforts to send out food to the area worst affected by the flood.
【填空题】
immune to , fall in love with , go along with, on one's behalf, be filled with , take the liberty of , expel from , be pessimistic about
She authorizcd her partner to carry out daily responsibllitles [ ]when she was on her business trip
