【判断题】
《消防法》规定、 任何单位、个人不得损坏或者擅白挪用、拆除、停用消防设施、器材.不得埋压、圈占 消防栓、不得占用防火间距 不得堵塞、防火通道
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裂解炉紧急停车时必须全关锅炉给水根部阀.以免突然进水而将高温炉管冷淬
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乙烯装置大检修后幵车.深冷分离系统氮气干燥要彻底.达到规定的露点要求,尽可能避免设备和管线发生冻堵
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裂解炉炉管某一根发生堵塞情况下.裂解炉可不停炉继续运转
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裂解炉对流段积炭的主要危害为发生二次燃烧损坏对流段管线。正确答案、
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泵轴封的作用是防止高压液体从泵壳内沿轴的四周而漏出或者外界空气以相反方向漏入泵壳内
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废润滑油含有杂质和水分、回炼性价比不高
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乙烯装置分离单元深冷分离系统甲烷与碳二分离罐满酒位.会导致甲烷化反应器飞温
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脱脂作业场所.应画出安全警戒区.并挂有 严禁烟火,有毒危险等警示牌
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乙烯装置分离氢气过程应尽量避免富気?溜分中夹帯有乙烯、以确保操作安全
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建设项目职业病防护用品必须与主体工程同时设计、同时施工、同时投入生产和使用
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紧急切断阀帯有近程和远程操作系统可实现自动控制
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炉膛温度在750°C以下确认炉膛内没有火焰则不需要经过吹扫或测爆可以重新点燃
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为了防止离心式压缩机超速可能引起的危险.设置电子超速跳闸联锁即可
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低温泵初次投用时可用甲醇作介质进行试运转、试运转后要排净甲醇并用氮气彻底干燥管道
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947器、樸火灾场所应选择水型灭火器、磷酸镣盐干粉灭火器、泡沫灭火器或卤代烷灭火器
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根据演练规模和观摩需要、可编制演练观摩手册。演练观摩手册通常包括应急演练时间、地点、情景描 述、安全注意事项等
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裂解气干燥器入口温度高将会导致裂解气干燥不合格.造成冷箱冻堵
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管道内部有压力时一般不得对受压原件进行重大维修
【判断题】
应急预案的编制应该有明确、具体的事故预防措施和应急程序并与其应急能力相适应
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建筑工程施工现场的消防安全由施工单位负责。实行施工总承包的由总承包单位负责
【判断题】
往复式压缩机排气阀盖特别热、排气量减少则可以判断该排气阀有故障
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水污染物是指直接或者间接向水体排放的.能导致水体污染的物质
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公民参加应急救援工作或者协助维护社会秩序期间.其在本单位的工资待谒和福利不变、表现突出、成绩显 著的.由县级以上人民政府给予表彰或者奖励
【判断题】
安全阀与压力容器之间一般不宜装设截止阀门
【判断题】
为了从根本上解决工业污染问.就是要采用少废无废技术即采用低能耗、高消耗、无污染的技术
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建设项日中防治环境'污染的措施.必须与主体工程同时设计、同时施工、同时投产使用
【判断题】
应急演练是针对事故情景依据应急预案而模拟开展的预警行动、事故报告、指挥协调、现场处置等活 动
【判断题】
重金属、有毒有害易长期积累的有机物对环境污染较持久
【判断题】
在丙烯精馋塔接丙烯过程中压力变化在一定程度上可反映塔内丙烯贮存量变化
【判断题】
空气中乙烷浓度大于4%.人会出现眩星、恶心和轻度麻醉症状
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乙烯产品纯度高.不存在腐蚀问所以输送乙烯产品的管道不需要定期检验
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急冷油换热器进行排油和倒空操作时•需要防烫伤
【判断题】
保护听力而言.一般认为每天8小时长期工作在100分贝以下听力不会损失
【单选题】
低[电]压是指___及以下电压等级。
A. 1kV
B. 6kV
C. 380V
D. 220V
【单选题】
高[电]压是指___以上电压等级。
A. 10kV
B. 20kV
C. 1kV
D. 110kV
【单选题】
___是指实现指定电气或相关功能,并处于实时发电、输电、变电、配电和供电状态下的设备或设施。
A. 运用设备
B. 备用设备
C. 运行设备
D. 检修设备
推荐试题
【单选题】
In a sudden _____________ of anger, the man tore up everything within reach.___
A. attack
B. burst
C. split
D. blast
【单选题】
In Britain people _____________ four million tons of potatoes every year.___
A. swallow
B. dispose
C. consume
D. exhaust
【单选题】
I'd _____________ his reputation with other farmers and business people in the community, and then make a decision about whether or not to approve a loan.___
A. take into account
B. account for
C. make up for
D. make out
【单选题】
She cooked the meat for a long time so as to make it _____________ enough to eat.___
A. mild
B. slight
C. light
D. tender
【单选题】
The computer revolution may well change society as _____________ as did the Industrial Revolution.___
A. certainly
B. insignificantly
C. fundamentally
D. comparatively
【单选题】
A lot of ants are always invading my kitchen. They are a thorough ___________.___
A. nuisance
B. trouble
C. worry
D. anxiety
【单选题】
As we can no longer wait for the delivery of our order, we have to _________ it.___
A. postpone
B. refuse
C. delay
D. cancel
【单选题】
When a fire _________ at the National Exhibition in London, at least ten priceless paintings were completely destroyed.___
A. broke of
B. broke out
C. broke down
D. broke up
【单选题】
The destruction of these treasures was a loss for mankind that no amount of money could __________.___
A. stand up to
B. make up for
C. come up with
D. put up with
【单选题】
The student was just about to ___________ the questions, when suddenly he found the answer.___
A. arrive at
B. submit to
C. work out
D. give up
【单选题】
When there are small children around, it is necessary to put bottles of pills out of _________.___
A. reach
B. hand
C. hold
D. place
【单选题】
The _________ of blood always makes him feel sick.___
A. sight
B. view
C. look
D. form
【单选题】
In Britain, the best season of the year is probably __________ spring.___
A. later
B. last
C. latter
D. late
【单选题】
Free medical treatment in this country covers sickness of mind as well as _________ sickness.___
A. normal
B. regular
C. average
D. ordinary
【单选题】
Although he had looked through all the reference material on the subject, he still found it hard to understand this point and her explanation only _________ to his confusion.___
A. extended
B. amounted
C. added
D. turned
【单选题】
A completely new situation will ___________ when the examination system comes into existence.___
A. arise
B. rise
C. raise
D. arouse
【单选题】
Cancer is second only __________ heart disease as a cause of death.___
A. of
B. to
C. with
D. from
【单选题】
The manager needs an assistant that he can _________ to take care of problems in his absence.___
A. count on
B. count in
C. count up
D. count out
【单选题】
We gave out a cheer when the red roof of the cottage came __________ view.___
A. from
B. in
C. before
D. into
【单选题】
They took ________ measures to prevent poisonous gases from escaping.___
A. fruitful
B. beneficial
C. valid
D. effective
【单选题】
Doing your homework is a sure way to improve your test scores, and this is especially true _______ it comes to classroom tests.___
A. when
B. since
C. before
D. after
【单选题】
In developing countries people are _______ into overcrowded cities in great numbers.___
A. breaking
B. filling
C. pouring
D. hurrying
【单选题】
There are other problems which I don't propose to ____________ at the moment.___
A. go into
B. go around
C. go for
D. go up
【单选题】
It is quite necessary for a qualified teacher to have good manners and _________ knowledge.___
A. extensive
B. expansive
C. intensive
D. expensive
【单选题】
I'm not sure whether I can gain any profit from the investment, so I can't make a(n) ______ promise to help you.___
A. exact
B. defined
C. definite
D. sure
【单选题】
The sports meet, originally due to be held last Friday, was finally ________ because of the bad weather.___
A. set off
B. broken off
C. worn off
D. called off
【单选题】
It has been revealed that some government leaders _______ their authority and position to get illegal profits for themselves.___
A. employ
B. take
C. abuse
D. overlook
【单选题】
Shelly had prepared carefully for her biology examination so that she could be sure of passing it on her first ________.___
A. intention
B. attempt
C. purpose
D. desire
【单选题】
The store had to _______ a number of clerks because sales were down.___
A. lay out
B. lay off
C. lay aside
D. lay down
【单选题】
All the students in this class passed the English exam ________ the exception of Li Ming.___
A. on
B. in
C. for
D. with
【单选题】
Writing is a slow process, requiring _______ thought, time, and effort.___
A. significant
B. considerable
C. enormous
D. numerous
【单选题】
Lightning is a ______ of electrical current from a cloud to the ground or from one cloud to another.___
A. rush
B. rainbow
C. rack
D. ribbon
【单选题】
I caught a ________ of the taxi before it disappeared around the corner of the street.___
A. vision
B. glimpse
C. look
D. scene
【单选题】
Students or teachers can participate in excursions to lovely beaches around the island at regular _________.___
A. gaps
B. rate
C. length
D. intervals
【单选题】
Physics is ________ to the science which was called natural philosophy in history.___
A. alike
B. equivalent
C. likely
D. uniform
【单选题】
The new appointment of our president _______ from the very beginning of next semester.___
A. takes effect
B. takes part
C. takes place
D. takes turns