相关试题
【单选题】
气化炉的热备用状态通常是指气化炉的内壁、管束以及合成气冷却器的温度至少达到___。
A. 120℃
B. 200℃
C. 250℃
D. 300℃
【单选题】
气化仪表联锁停车大多采用了___的取值式。
A. 二取一
B. 三取二
C. 三取三
D. 四取三
【单选题】
粉煤给料罐通气锥氮气量由流量控制器和差压控制器输出进行___后控制。
【单选题】
当全部操作员站出现故障时(所有上位机黑屏或死机),操作员应立即___。
A. 启动紧急停车硬按钮
B. 联系仪表解决
C. 等待系统跳车
D. 凭经验操作
【单选题】
正常生产期间,可以通过观察锯齿波曲线的趋势来检查___操作的稳定性。
A. 锁斗系统
B. 氮气系统
C. 蒸汽系统
D. 氧气系统
【单选题】
对于特定的煤种,气化温度过低最先表现出的现象是___。
A. 氧/煤比低
B. 气化炉产汽量低
C. 渣水系统固含量高
D. 合成气中 CO2 含量低
【单选题】
下面哪一项不能作为气化炉内部温度的判断依据___。
A. 汽包的发汽量
B. 气化炉出口合成气的 CO2 含量
C. 渣的外观
D. 烧嘴循环水的量
【单选题】
某气化装置氧煤比是 0.85,煤流量是 50000kg/h,则氧流量是___kg/h。
A. 58824
B. 42500
C. 45000
D. 50000
【单选题】
煤中___的多少对煤的结渣情形起着重要作用,是个首要的影响因素。
A. 水分
B. 挥发分
C. 灰分
D. 固定碳
【单选题】
气化炉开工烧嘴使用的燃料、助燃剂分别使用的是___。
A. 天然气 氧气
B. 解析气 工厂风
C. 天然气 工厂风
D. 解析气 氧气
【单选题】
粉煤给料罐通气锥氮气量由流量控制器和差压控制器输出进行___后控制。
【单选题】
停车检修时,做法错误的是___。
A. 检修人员进入 N2 置换后的设备内时,需先用压缩风吹扫,检验气样合格后方可
B. 冬季停工时,水蒸汽线必须用压缩风吹扫排净积水
C. 冬季对某些无法将水排净的露天设备管线死角,必须把设备解体,排尽积水
D. 冬季停车时,水线导淋应打开排水,蒸汽导淋不用排水
【单选题】
仪表风中断后,气开阀(FC 阀)将___。
A. 打开
B. 关闭
C. 维持原来的位置
D. 处于中间位置
【单选题】
控制器由两个控制器串联连接组成,一个控制器的输出值作为另一个控制器的设定值,这类控制系统称为___系统。
A. 串级控制
B. 分程控制
C. 比值控制
D. 选择控制
【单选题】
串级控制系统的特点___。
A. 在系统结构上组成二个闭合回路
B. 主、副调节器串联,主调节器的输出作为副调节器的给定值
C. 在系统特性上,由于副回路的作用,有效地克服了滞后,可大大提高调节质量
D. 主、副回路协同工作,克服干扰能力强,可用于不同负荷和操作条件变化的场合
【单选题】
装置停仪表空气,主要现象不包括___。
A. 界区仪表空气压力低报警
B. FC阀全关,FO阀全开
C. FC阀全开,FO阀全关
D. 部分塔、罐的液位、压力波动
【单选题】
饱和蒸汽在同一压力下,经过过热器进一步吸收热量使其温度高于该压力下所对应的沸腾温度时,也就是( )不变,温度增高,此时的蒸汽即为过热蒸汽。___
【单选题】
由于变换反应是放热反应,适当降低温度有利于平衡向右移动,因此平衡常数随温度的降低而增大。当适当降低时,对于 CO 变换反应,CO 的含量___。
A. 降低
B. 升高
C. 不变
D. 先升后降
【单选题】
甲醇/水分离塔运用了精馏的原理。精馏是利用物质( )而将两种或两种以上的物质分离的过程。___
A. 沸点不同
B. 压力不同
C. 分子量不同
D. 密度不同
【单选题】
在甲醇热再生塔中用( )做气提介质,将溶解于甲醇中的 CO2、H2S、COS 全部解吸出来,达到富甲醇再生的目的。为了向硫磺回收装置提供合格的原料气,用易分离的甲醇蒸气做气提介质,是比较合理的。___
A. 低压氮气
B. 中压蒸汽
C. 甲醇蒸汽
D. 低压蒸汽
【单选题】
在装置建设期间,喷淋甲醇的喷嘴安装方向与变换气流动方向( )。___
A. 相反
B. 相同
C. 成 90°
D. 成 45°
【单选题】
二段入口分离罐 V2402 液位控制为( ) 控制。___
A. 三取二
B. 三取中
C. 二取二
D. 二取一
【单选题】
在温度高时,由于气体分子的动能大,能被吸附剂表面分子引力束缚的分子就少,因而温度越高平衡吸附容量也就( )。___
A. 越大
B. 越小
C. 先变大后变小
D. 无影响
【单选题】
VPSA 单元均压降压过程,这是在吸附过程结束后,顺着吸附方向将塔内的较高压力的氢气放入其它已完成再生的较低压力吸附塔的过程,该过程不仅是降压过程,更是回收床层死空间( )的过程,本流程共包括了七次连续的均压降压过程,因而可保证氢气的充分回收。___
A. CO
B. H2
C. CH4
D. CO2
【单选题】
高压锅炉水经过 21FV00057 控制流量,进入V2101,该股水的作用是( )。___
A. 除去合成气携带的煤灰等杂质
B. 除去合成气中的 H2S
C. 除去合成气中的 NH3
D. 除去合成气中的 HCN
【单选题】
E2103 壳层的设计压力为( )MPa___。( A )
A. 4.8
B. 4.2
C. 3.8
D. 4.0
【单选题】
当 21 单元系统压差正常,E2103 出口温度 21TT00012 偏高时,21TV00012 将( )。___
A. 开大
B. 关小
C. 手动全开
D. 手动全关
【单选题】
E2107 的蒸汽侧压力控制为___.
A. 21PICA00026 单回路控制
B. 21PICA00026 串级控制
C. 21PICA00026 分程控制
【单选题】
净化装置废锅液位自动调节系统是___形式。
A. 单冲量调节
B. 复合调节
C. 三冲量调节
D. 分程调节
【单选题】
高压锅炉水经过 E2111 后分为两路,一路作为( ),另外一路作为( )。___
A. T2101 洗涤水、T2401 洗涤水
B. R2102 入口补水,R2103 入口补水
C. V2101 洗涤水、水冷壁上水
D. 烧嘴冷却水罐补水、洗涤塔补水
【单选题】
低温甲醇洗装置冷区(指介质温度在 0℃以下)换热器冷、热介质投用的先后顺序是( )。___
A. 先投热介质,再投冷介质
B. 先投冷介质,再投热介质
C. 冷、热介质同时投
D. 只投冷介质,不投热介质
【单选题】
正常操作条件下,甲醇水分离塔塔底的温度为( )。___
A. 125℃
B. 135℃
C. 145℃
D. 155℃
【单选题】
粗合成气进 V2101 设置了三台安全阀,安全阀的定压值为( )。___
A. 3.8
B. 4.0
C. 4.2
D. 4.5
【单选题】
此流程,防止安全阀憋压起跳。___
A. 21HV00004
B. 21HV00024 后手阀
C. 21HV00024 与 21HV00024 前手阀
D. 以上均不正确
【单选题】
E2103 的压力控制方式为( )。___
A. 21PICA00012 单回路控制
B. 21PICA00026 单回路控制
C. 21PICA00012 分程控制
D. 21PICA00012 串级控制
【单选题】
变换气管线爆破时采用的介质为( )。___
A. 低压氮气
B. 中压氮气
C. 低压蒸汽
D. 工厂风或仪表风
【单选题】
变换单元 8.0Mpa 高压氮气共有( )个用户点。___
【单选题】
E2103 建立正常液位后,打开底部煮炉蒸汽手阀,引蒸汽煮炉升温,通过调节手阀开度控制炉水升温速度不大于( )℃/h,直至炉水至沸腾状态。___
【单选题】
装置气密时对于变换变换单元,高压区的最终气密压力为( ),开工循环气系统的最终气密压力为(),工艺凝液回收系统系统的最终气密压力为( )。___
A. 3.0、1.5、0.6
B. 4.0、1.0、0.6
C. 3.0、1.5、0.3
D. 4.0、1.0、0.3
推荐试题
【单选题】
The Constitution of the United States .
A. A. gives the most power to Congress
B. B. gives the most power to the President
C. C. tries to give each branch enough power to balance the others
D. D. gives the most power to the Supreme Court
【单选题】
The U. S. Constitution came into effect in .
A. A. 1787
B. B. 1789
C. C. 1791
D. D. 1793
【单选题】
The Vietnam War was a long-time suffering for Americans, and it continued throughout the terms of Presidents .
A. A. Johnson, Nixon and Ford
B. B. Truman, Eisenhower and Kennedy
C. C. Kennedy, Johnson and Nixon
D. D. Eisenhower, Kennedy and Johnson
【单选题】
President applied New Deal to deal with the problems of the Great Depression.
A. A. Wilson
B. B. Truman
C. C. Roosevelt
D. D. Kennedy
【单选题】
The policy of the United States was at the beginning of the two world wars.
A. A. neutrality
B. B. full involvement
C. C. partial involvement
D. D. appeasement
【单选题】
Abraham Lincoln issued to grant freedom to all slaves.
A. A. Declaration of Independence
B. B. Constitution
C. C. Emancipation Proclamation
D. D. Bill of Rights
【单选题】
In May 1775, was held in Philadelphia and began to assume the functions of a national government.
A. A. the First Continental Congress
B. B. the Second Continental Congress
C. C. the Boston Tea Party
D. D. the Congress of Confederation
【单选题】
The first shots of the American dependence were fired in .
A. A. Concord
B. B. Lexington
C. C. Philadelphia
D. D. Boston
【单选题】
“No taxation without representation” was the rallying slogan of .
A. A. the settlers of Virginia
B. B. the people of Pennsylvania
C. C. the colonists in New England
D. D. the people of the 13 colonies
【单选题】
The Seven Years’ War occurred between the .
A. A. French and American Indians
B. B. French and Spaniards
C. C. French and British
D. D. British and American Indians
【单选题】
Pilgrim Fathers are a group of who came to America to avoid persecution in England.
A. A. Protestants
B. B. Puritans
C. C. Catholics
D. D. Christians
【单选题】
The first successful English colony in North America was founded at in .
A. A. Jamestown, Louisiana
B. B. Boston, Massachusetts
C. C. Jamestown, Virginia
D. D. Plymouth, Georgia
【单选题】
The characteristic of dominant American culture is .
A. A. English-speaking, northern European, Roman Catholic and middle-class
B. B. English-speaking, western European, Roman Catholic and upper-class
C. C. English-speaking, northern European, Protestant and upper-class
D. D. English-speaking, western European, Protestant and middle-class
【单选题】
The ImmiWar of Ingrants Act of 1924 restricted the further immigration into the United States, particularly from .
A. A. Europe
B. B. Asia
C. C. Africa
D. D. South America
【单选题】
The largest minority in the United States is the .
A. A. Pacific Islanders
B. B. Blacks
C. C. Native Americans
D. D. Asians
【单选题】
The native Alaskan population includes the following except the .
A. A. Indians
B. B. Eskimos
C. C. Aleuts
D. D. Blacks
【单选题】
is located on the U. S. –Canadian border between Lake Erie and Lake Ontario.
A. A. Yellowstone National Park
B. B. The Grand Canyon
C. C. Niagara Falls
D. D. The Great Salt Lake
【单选题】
Some of the world famous universities like Harvard, Yale and MIT are located .
A. A. in the South
B. B. along the Pacific Coast
C. C. in New England
D. D. in the Midwest
【单选题】
The largest river in the U. S. is .
A. A. the Missouri River
B. B. the Mississippi River
C. C. the Ohio River
D. D. the Colorado River
【单选题】
The U. S. lies in North America, with Canada to the north, Mexico to the south, the Atlantic to its and the Pacific to its .
A. A. northern, east, west
B. B. central, east, west
C. C. southern, west, east
D. D. western, east, west
【单选题】
The state of is the largest in area of all the states.
A. A. Alaska
B. B. Hawaii
C. C. Texas
D. D. Florid
【单选题】
The United States has states on the continent.
A. A. 50
B. B. 49
C. C. 48
D. D. 35
【单选题】
Waiting for Godot is written by .
A. A. Samuel Beckett
B. B. George Orwell
C. C. William Golding
D. D. D. H. Lawrence
【单选题】
Of the following writers, is NOT a Nobel Prize winner.
A. A. Samuel Beckett
B. B. James Joyce
C. C. William Golding
D. D. V. S. Naipaul
【单选题】
Of the following statements, is NOT correct about Virginia Woolf.
A. A. She was a central figure of the “Bloomsbury Group”.
B. B. She experimented with stream of consciousness.
C. C. She was an influential feminist.
D. D. Her masterpiece was The Rainbow.
【单选题】
Of the following books, was NOT written by Thomas Hardy.
A. A. Jude the Obscure
B. B. Tess of the D’Urbervilles
C. C. Adam Bede
D. D. The Return of the Native
【单选题】
is NOT included in the modernist group.
A. A. Oscar Wild
B. B. Virginia Woolf
C. C. William Butler Yeats
D. D. T. S. Eliot
【单选题】
Of the following statements, is NOT correct in terms of Neo-Romanticism.
A. A. It prevailed at the end of the 19th century.
B. B. The writers were dissatisfied with the social reality.
C. C. The writers believed in “Art for Art’s Sake”.
D. D. Treasure Island was a representative work.
【单选题】
is a representative of English Critical Realism at the turn of the 19th century.
A. A. Robert Louis Stevenson
B. B. John Milton
C. Joseph Conrad
D. D. Thomas Hardy
【单选题】
Of Dickens’ novels, is considered autobiographical.
A. A. A Tale of Two Cities
B. B. David Copperfield
C. C. Oliver Twist
D. D. Great Expectations
【单选题】
is viewed as Romantic poetry’s “Declaration of Independence.”
A. A. “I Wondered Lonely as a Cloud”
B. B. Don Juan
C. C. “Preface to Lyrical Ballads”
D. D. Prometheus Unbound
【单选题】
The most significant achievement of the English Renaissance is .
A. A. poetry
B. B. drama
C. C. novel
D. D. pamphlet
【单选题】
The following Christmas traditions are particularly British except .
A. A. Trooping the Color
B. B. Queen’s Christmas message
C. C. Boxing Day
D. D. Christmas pantomime
【单选题】
Of the following, is NOT a common feature of all the British holidays.
A. A. families getting together
B. B. friends exchanging good wishes
C. C. friends enjoying each other’s company
D. D. families traveling overseas
【单选题】
is Britain’s top pay television provider.
A. A. BSB
B. B. SkyTV
C. C. BBC
D. D. BSkyB
【单选题】
Life on Earth is a kind of program produced by the BBC and is popular among 500 million viewers worldwide.
A. A. feature
B. B. drama
C. C. documentary
D. D. soap opera
【单选题】
Among Britain’s quality press, the following newspapers are regarded as the “Big Three” with the exception of .
A. A. The Times
B. B. The Guardian
C. C. The Observer
D. D. The Daily Telegraph
【单选题】
To be admitted to the Open University, one need .
A. A. some educational qualifications
B. B. no educational qualifications
C. C. General Certificate of Education-Advanced
D. D. General National Vocational Qualifications
【单选题】
Of the following, is NOT a basis of admission to Britain’s universities.
A. A. result in national entrance test
B. B. A-level result
C. C. an interview
D. D. school references
【单选题】
Partially funded by central government grants, the British univPartially funded by central government grants, the British universities receive their remaining funds from all the following sources except .
A. A. tuition fees
B. B. loans
C. C. donations
D. D. corporate contributions