【单选题】
As to the greenhouse effect, the author ________.___
A. share the same view with the scientist
B. is uncertain of its occurrence
C. rejects it as being ungrounded
D. thinks that it will destroy the world soon
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相关试题
【单选题】
The underlined word "offset" in the second paragraph could be replaced by _________.___
A. slip into
B. make up for
C. set up
D. catch up with
【单选题】
It can be concluded that ____________.___
A. raising the world's temperature only a few degrees would not do much harm to life on earth
B. lowering the world's temperature merely a few degrees would lead major farming areas to disaster
C. almost no temperature variations have occurred over the past decade
D. the world's temperature will remain constant in the years to come
【单选题】
This passage is primarily about __________.___
A. the greenhouse effect
B. the burning of fossil fuels
C. the potential effect of air pollution
D. the likelihood of a new ice age
【单选题】
What is the major function of paragraph 1?___
A. To arouse the reader's concern.
B. To introduce the theme of the whole passage.
C. To summarize the whole passage.
D. To state the primary uses of TV.
【单选题】
Television, as a source of entertainment, is ________.___
A. not very convenient
B. very expensive
C. quite dangerous
D. relatively cheap
【单选题】
Why are some people against TV?___
A. Because TV programs are not interesting.
B. Because TV viewers are totally passive.
C. Because TV prices are very high.
D. Because TV has both advantages and disadvantages.
【单选题】
One of the most obvious advantages of TV is that _________.___
A. it keeps us informed
B. it is very cheap
C. it enables us to have a rest
D. it controls our lives
【单选题】
According to the passage, whether TV is good or not depends on ___________.___
A. its quality
B. people's attitude towards it
C. how we use it
D. when we use it
【单选题】
What regulation was issued by New York State concerning beverage containers?___
A. A fee should be charged on used containers for recycling.
B. Throwaways should be collected by the state for recycling.
C. Consumers had to pay for beverage containers and could get their money back on returning them.
D. Beverage companies should be responsible for collecting and reusing discarded plastic soda bottles.
【单选题】
The returned plastic bottles in New York used to _____________.___
A. be turned into raw materials
B. be separated from other rubbish
C. have a second-life value
D. end up somewhere underground
【单选题】
The key problem in dealing with returned plastic beverage containers is ______________.___
A. how to reduce their recycling costs
B. to sell them at a profitable price
C. how to turn them into useful things
D. to lower the prices for used materials
【单选题】
Recycling has become the first choice for the disposal of rubbish because ______________.___
A. recycling causes little pollution
B. other methods are more expensive
C. recycling has great appeal for the jobless
D. local governments find it easy to manage
【单选题】
It can be concluded from the passage that ____________.___
A. recycling is to be recommended both economically and environmentally
B. local governments in the U.S. can expect big profits from recycling
C. rubbish is a potential remedy for the shortage of raw materials
D. landfills will still be widely used for waste disposal
【单选题】
The author chose to study engineering at a small liberal-arts university because he ________.___
A. intended to be a sensible student with noble ideals
B. wanted to be an example of practicality and rationality
C. intended to be a combination of engineer and humanist
D. wanted to coordinate engineering with liberal-arts courses in college
【单选题】
According to the author, by interacting with people who study liberal arts, engineering students can __________.___
A. broaden their horizons
B. receive guidance in their careers
C. become noble idealists
D. balance engineering and the liberal arts
【单选题】
In the eyes of the author, a successful engineering student is expected ______________.___
A. to be imaginative with a value system to guide him
B. to be a technical genius with a wide vision
C. to have an excellent academic record
D. to be wise and mature
【单选题】
The author's experience shows that he was ________.___
A. creative
B. ambitious
C. irrational
D. unrealistic
【单选题】
The underlined word "they" in "... together they threaten to confuse." (Para.5) refers to ____________.___
A. practicality and rationality
B. engineering and the liberal arts
C. reality and noble ideals
D. flexibility and a value system
【单选题】
It can be learned from the passage that the Ouchidas' house __________.___
A. failed to meet energy conservation standards
B. was designed and constructed in a scientific way
C. is well worth the money spent on its construction
D. is almost faultless from the point of energy conservation
【单选题】
What made the Ouchidas' new house a horrible dream?___
A. Lack of fresh air.
B. Gas leakage in the kitchen.
C. The newly painted walls.
D. Poor quality of building materials.
【单选题】
The underlined word "accentuate" (Para. 3) most probably means "________".___
A. worsen
B. accelerate
C. relieve
D. improve
【单选题】
Why were cracks in old houses not a big concern?___
A. Because environmental protection was given top priority.
B. Because indoor cleanness was not emphasized.
C. Because they were technically unavoidable.
D. Because energy used to be inexpensive.
【单选题】
This passage is most probably taken from an article entitled "_________".___
A. Energy Conservation
B. Air Pollution Indoors
C. House Building Crisis
D. Traps in Building Construction
【单选题】
We need to plan ahead in order to ___________.___
A. keep a record of all the events
B. better organize our activities
C. store everything in our head
D. pile up little tasks neatly
【单选题】
Strategic times are best for us to ___________.___
A. save energy
B. check e-mails
C. study efficiently
D. organize activities
【单选题】
Which of the following could be used as a motivation to do our assignments?___
A. Remembering our urgent tasks.
B. Any activities we're eager to do.
C. Taking a break in the afternoon.
D. The promise to study efficiently.
【单选题】
What can help us to keep refreshed throughout the day?___
A. Doing some physical exercise.
B. Taking a short nap in the afternoon.
C. Rushing through some assignments.
D. Playing a game of chess with a friend.
【单选题】
Which of the following could be the best title for this article?___
A. Study Habits and Time Management
B. Business Management and Leadership
C. University Education and Campus Life
D. Life Goals and Academic Development
【单选题】
It is implied in the text that it is hard to ________.___
A. carry life learning though
B. tell the nature of life learning
C. learn without going to school
D. find a specially trained teacher
【单选题】
According to the author, the schooling framework often ________.___
A. produces slow students with poor memories
B. ignores some parts of the official curriculum
C. fails to provide enough knowledge about life
D. gives little care to the quality of teaching materials
【单选题】
Life learners recognize that learning will not be difficult if they are _________.___
A. clear about why to learn
B. careful to make a time table
C. able to respect other people
D. cautious about any mistakes
【单选题】
According to the author, life learning ________.___
A. could prevent one from running risks
B. could be a road full of trials and errors
C. makes a kid independent of his parents
D. teaches a kid how to avoid being scorned
【单选题】
Through life learning, children ________.___
A. will grow without the assistance from parents
B. will learn to communicate with the real world
C. will be driven to learn necessary life knowledge
D. will be isolated from the negative side of society
【单选题】
A good title for this passage is __________.___
A. Sleep
B. Good Health
C. Dreams
D. Work and Rest
【单选题】
The word drowsy in the last paragraph means __________.___
A. sick
B. stand up
C. asleep
D. a little sleepy
【单选题】
This passage suggests that not getting enough sleep might make you ___________.___
A. dream more often
B. have poor health
C. nervous
D. breathe quickly
【单选题】
During REM, ___________ .___
A. your eyes move quickly
B. you dream
C. you are restless
D. both A and B
【单选题】
The average number of hours of sleep that an adult needs is __________.___
A. approximately six hours
B. around ten hours
C. about eight hours
D. not stated here
推荐试题
【单选题】
脱丁烷塔再沸热量是由（）提供，塔顶气相由___冷凝。
A. LS，RE
B. PO，RP
C. LS，CW
D. PO，CW
【单选题】
脱丁烷塔正常控制时釜温___℃。
A. 105.5
B. 107.9
C. 112.3
D. 114.8
【单选题】
脱丁烷塔正常控制时顶温___℃。
A. 39.6
B. 41.5
C. 43.5
D. 46.1
【单选题】
脱丁烷塔正常控制时顶压力___MPa。
A. 0.355
B. 0.378
C. 0.416
D. 0.459
【单选题】
脱丁烷回流罐顶“HFL”代表（）系统，用于___气体的排放。
A. 冷火炬，冷
B. 冷凝液，冷
C. 热火炬，冷
D. 热火炬，热
【单选题】
176. “BD”代表（）系统，“CBD”指的是___。
A. 液体排放、冷物料高点排放
B. 低点排放、冷物料低点排放
C. 液体排放、冷物料低点排放
D. 高点排放、冷物料高点排放
【单选题】
公用工程系统中CW的最高使用温度为___℃。
【单选题】
仪表风压力急剧下降，且备用仪表风压缩机不能紧急启动时，将造成装置___。
A. 显示错误
B. 运行异常
C. 负荷降低
D. 全面紧急停车
【单选题】
循环冷却水正常压力设计值为___。
A. 0．45MPa
B. 0．6MPa
C. 0．7MPa
D. 0．8MPa
【单选题】
当循环冷却水压力低于___时，将造成装置的全面停车。
A. 0．3MPa
B. 0．4MPa
C. 0．5MPa
D. 0．6MPa
【单选题】
循环冷却水正常压力设计值为（）MPa，当压力低于___MPa时，将造成装置的全面停车。
A. 0.45，0.3
B. 0.45，0.4
C. 0.45，0.45
D. 0.5,0.4
【单选题】
关于装置负荷波动对分离系统的影响，下列说法不正确的是___。
A. 冷箱系统压力波动
B. 冷箱系统温度波动
C. 冷箱系统各分离罐液位波动
D. 冷箱各分离罐液面不会波动
【单选题】
关于装置负荷波动对分离系统的影响，下列说法正确的是___。
A. 各精馏塔不会波动
B. 冷箱系统会产生波动
C. 各反应器不会波动
D. 再生系统不会波动
【单选题】
对于乙烷的裂解，我们常用___表示其裂解深度。
A. 转化率
B. 产汽率
C. 炉COT
D. 液体产物的含氢量
【单选题】
乙烷裂解炉负荷的波动对乙烯精馏塔的主要影响是___。
A. 乙烯采出量的平衡
B. 乙烷采出量的平衡
C. 塔压
D. 塔釜温度
【单选题】
在裂解气分离中，分离温度最低，冷量消耗最大，乙烯损失最高的地方是___。
A. 脱丁烷塔
B. 脱乙烷塔
C. 脱甲烷塔
D. 高压脱丙烷塔
【单选题】
下列选项中，不属于减少乙烯损失的操作是？___。
A. 优化冷箱操作
B. 优化脱甲烷塔操作
C. 优化乙烯精馏塔的操作
D. 优化脱丙烷塔的操作
【单选题】
有关乙烯损失的说法正确的是___。
A. 脱甲烷塔中氢／甲烷越大，乙烯损失越大
B. 脱甲烷塔中氢／甲烷越小，乙烯损失越大
C. 冷箱节流效果越好，乙烯损失越大
D. 脱甲烷塔灵敏板温度越低乙烯损失越大
【单选题】
乙烯装置中(前脱丙烷流程)，乙烯损失所占比重最大的部位是___。
A. 冷箱尾气
B. 乙烯精馏塔釜
C. 脱乙烷塔釜
D. 压缩凝液汽提塔
【单选题】
提高碳二加氢反应器的进料温度，不会使___。
A. 绿油生成量加大
B. 催化剂活性提高
C. 催化剂选择性下降
D. 乙炔加氢速度变慢
【单选题】
碳二加氢反应器的氢炔比提高，可能导致的结果是___。
A. 绿油生成量减少
B. 催化剂活性提高
C. 催化剂选择性下降
D. 乙炔加氢速度变慢
【单选题】
关于分离系统正常停车处理原则的说法不正确的是___。
A. 尽可能回收产品
B. 不影响下游装置
C. 保证反应器不飞温
D. 保证氢气正常外送
【单选题】
什么情况进行紧急停车处理___。
A. 总的持续电力故障
B. 突发蒸汽管网压力低
C. P-360A突停
D. P-2160突停
【单选题】
下列关于正常停车处理的说法不正确的是___。
A. 应尽可能回收产品
B. 热区在冷区之前停车
C. 停车一定要统一指挥
D. 分离系统一定要按顺序停车
【单选题】
关于分离系统正常停车处理原则的说法不正确的是___。
A. 尽可能回收产品
B. 不影响下游装置
C. 保证反应器不飞温
D. 保证氢气正常外送
【单选题】
关于正常停车前冷区的准备工作，下列说法不正确的是___。
A. 关冷区各冷剂阀
B. 高低压乙烯外送系统改由低压蒸汽加热
C. 停火炬气回收压缩机
D. 低压甲烷压缩机停
【单选题】
关于热区正常停车准备工作，下列做法不正确的是___。
A. 停车前一小时碳三加氢停止注氢,截止阀关闭
B. 维持各塔罐正常液面稳定操作
C. 确认有一台丙烯干燥器再生完毕
D. 丙烯回收流程已设定好
【单选题】
下列属于热区正常停车前的准备工作的是___。
A. 丙烯产品停止采出
B. 不凝气改返燃料气系统
C. 停止碳四采出
D. 碳三加氢反应器停止注氢,且关闭氢气调节阀前闸阀
【单选题】
工艺管线,设备倒空后氮气置换需达到氮气≥___%。
【单选题】
容器倒空时应先（）,后___。
A. 充压，泄压
B. 排液，泄压
C. 泄压，排液
D. 置换，泄压
【单选题】
设备倒空的先后顺序为___。
A. 先泄压,后排液
B. 先导液,后泄压
C. 泄压和导液可同时进行
D. 无先后次序
【单选题】
进入设备内部作业时，有机物含量应小于___。
A. 0.1%
B. 0.2%
C. 0.5%
D. 1%
【单选题】
进入设备内部用火作业时，氧气含量应大于___。
A. 12.5%
B. 16.5%
C. 19.5%
D. 23.5%
【单选题】
下列各项关于现场动火的说法正确的有___。
A. 几个动火项目可办一个动火证
B. 动火分析只用作设备，管线内部即可
C. 动火监护人无权终止不合理要求的动火
D. 动火分析要求统一规定为管内≤0.1%,管外≤0.2%
【单选题】
一个监火人最多可监护的点数为___点。
【单选题】
介质为易燃易爆物质时，抽调盲板周围___米范围内不准动火。
【单选题】
乙烯在空气中的爆炸极限为___% V 。
A. 2.2~63
B. 3.1~63
C. 2.2~36
D. 2.7~36
【单选题】
乙烯的爆炸极限___。
A. 2、7～36%
B. 5、4～32%
C. 6、1～43%
D. 17、2～49、1%
【单选题】
甲烷的爆炸极限是___。
A. 5～15%
B. 10～20%
C. 15～45%
D. 15～60%
