刷题
导入试题
【判断题】
[1]气体和液体统称为流体,其密度只与温度有关而与压力无关
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】
[2]一般说来,气体的溶解度随压力的升高和温度的降低而增加
A. 对
B. 错
【判断题】
[3]乙烯冷剂压缩机的负荷主要是由乙烯生产装置的负荷和分离用户换热状态影响
A. 对
B. 错
【判断题】
[4]冷剂无相变时,冷凝器的负荷主要由冷剂量来调节
A. 对
B. 错
【判断题】
[5]离心式泵压缩机的一个段由一个级构成
A. 对
B. 错
【判断题】
[6]喘振只是一种暂时现象,不会
A. 对
B. 错
【判断题】
[7]安全阀定压值一般为最大操作压力的110%
A. 对
B. 错
【判断题】
[8]压缩机轴位移高高跳车为二取二
A. 对
B. 错
【判断题】
[9]由于工艺和设备原因即使乙烯机丙烯机全部停车,裂解气压缩机也不一定要停车
A. 对
B. 错
【判断题】
[10]往复泵的流量与泵本身的几何尺寸和活塞往复次数无关,而与泵的扬程有关
A. 对
B. 错
【判断题】
[11]制冷压缩机最小回流设计热虹吸管线要求吸入罐没有液位
A. 对
B. 错
【判断题】
[12]压缩比即气体出口与入口压强之比
A. 对
B. 错
【判断题】
[13]在测量中,所得到的测量值和工业的指示值不一样时,其差值就是测量误差
A. 对
B. 错
【判断题】
[14]碱浓度高时易造成设备腐蚀
A. 对
B. 错
【判断题】
[15]换热器冷却水一般采用上进下出
A. 对
B. 错
【判断题】
[16]微分调节作用具有抑制振荡的效果
A. 对
B. 错
【判断题】
[17]选定的单位相同时,测量值小数点后位数越多,测量越精确
A. 对
B. 错
【判断题】
[18]当压缩机吸入量过小时或后系统突然弊压时会发生喘振
A. 对
B. 错
【判断题】
[19]微分作用,主要来克服被调参数
A. 对
B. 错
【判断题】
[20]在相同条件下,同种物料在节流前温度越低,则节流后温度越低
A. 对
B. 错
【判断题】
[21]积分调节作用在最后达到稳定时,偏差是等于零的
A. 对
B. 错
【判断题】
[22]当物料过冷而形成固体,从而堵塞物料通道,称为冻塔
A. 对
B. 错
【判断题】
[23]将饱和液体在其饱和压力下冷却到低于其冷凝温度的过程叫过冷
A. 对
B. 错
【判断题】
[24]要想提高换热器的传递速率,必须增大传热的推动和降低传热的阻力
A. 对
B. 错
【判断题】
[25]由于废碱中含NaOH极少,因而不会影响环保
A. 对
B. 错
【判断题】
[26]真空度低时,可增加投用一组抽子,先投二级,后投一级
A. 对
B. 错
【判断题】
[27]乙烯机透平轴封泄漏加大时,可将格兰冷凝器开工
A. 对
B. 错
【判断题】
[28]冷泵原始启动先干燥,后灌泵,再充压
A. 对
B. 错
【判断题】
[29]离心泵流量波动时,先检查液位,后检查压力表,最后检查过滤网
A. 对
B. 错
【判断题】
[30]透平轴封目的是防止高压缸蒸汽顺轴漏出,低压缸真空部分空气顺轴漏入系统
A. 对
B. 错
【判断题】
[31]离心泵出口阀堵塞会使泵压力下降,流量降低
A. 对
B. 错
【判断题】
[32]润滑方式分静压方式润滑和动压润滑
A. 对
B. 错
【判断题】
[33]在低温下,微量水能与烃类形成白色结晶水合物,压力愈高,生成水合物的起始温度也愈高
A. 对
B. 错
【判断题】
[34]在静止的液体中,液体内任一点的压强只与流体密度有关,而与液体的深度无关
A. 对
B. 错
【判断题】
[35]冷冻操作是从低温物料中取出热量,并将此热量传给高温物体的过程
A. 对
B. 错
【判断题】
[36]活塞往复一次完成一个工作循环,两个止点间活塞的行程,称为冲程
A. 对
B. 错
【判断题】
[37]在精馏塔中段设置中段回流,可以使塔内各部分汽液相负荷趋于均匀
A. 对
B. 错
【判断题】
[38]
A. 对
B. 错
【判断题】
[39]蒸汽压力越高,其
A. 对
B. 错
【判断题】
[40]将精馏塔与制冷系统联系起来,使热量从高温处取出再送至低温处而构成热泵系统
A. 对
B. 错
【判断题】
[41]流体湍动越激烈,损失的能量越大
A. 对
B. 错
推荐试题
【单选题】
The marked the establishment of feudalism in England.
A. A. Viking invasion
B. B. signing of the Magna Carta
C. C. Norman Conquest
D. D. Adoption of common law
【单选题】
The end of the Wars of the Roses led to the rule of .
A. A. the House of Valois
B. B. the House of York
C. C. the House of Tudor
D. D. the House of Lancaster
【单选题】
The direct cause for the Religious Reformation was King Henry VIII’s effort to .
A. A. divorce his wife
B. B. break with Rome
C. C. support the Protestants
D. D. declare his supreme power over the church
【单选题】
The English Civil War broke out in 1642 between .
A. A. Protestants and Puritans
B. B. Royalists and Parliamentarians
C. C. nobles and peasants
D. D. aristocrats and Christians
【单选题】
was passed after the Glorious Revolution.
A. A. Bill of Rights
B. B. Act of Supremacy
C. C. Provisions of Oxford
D. D. Magna Carta
【单选题】
The Industrial Revolution was aThe Industrial Revolution was accomplished in Britain by the middle of the century.
A. A. 17th
B. B. 18th
C. C. 19th
D. D. 20th
【单选题】
Britain faced strong challenges in its global imperial dominance by the beginning of the century.
A. A. 17th
B. B. 18th
C. C. 19th
D. D. 20th
【单选题】
As a revising chamber, the House of Lords is expected to the House of Commons.
A. A. rival
B. B. complement
C. C. criticize
D. D. inspect
【单选题】
The British government is characterized by a division of powers between three of the following branches with the exception of the .
A. A. judiciary
B. B. legislature
C. C. monarchy
D. D. executive
【单选题】
The importance of the British monarchy can be seen in its effect on .
A. A. passing the bills
B. B. advising the government
C. C. political parties
D. D. public attitude
【单选题】
British Cabinet works on the principle of .
A. A. collective responsibility
B. B. individual responsibility
C. C. defending the collectivism
D. D. defending the individuals
【单选题】
The main duty of the British Privy Council is to .
A. A. make decisions
B. B. give advice
C. C. pass bills
D. D. supervise the Cabinet
【单选题】
is the first African-American winner of the Nobel Prize for Literature.
A. A.Ralph Ellison
B. B. Tony Morrison
C. C. Richard Wright
D. D. James Baldwin
【单选题】
Of the following writers, is Not a Nobel Prize winner.
A. A. Alice Walker
B. B. Ernest Hemingway
C. C. William Faulkner
D. D. Eugene O’Neil
【单选题】
Of the following books, is NOT written by Ernest Hemingway.
A. A. The Sun Also Rises
B. B. The Sound and the Fury
C. C. A Farewell to Arms
D. D. For Whom the Bell Tolls
【单选题】
F. Scott Fitzgerald’s finest novel is , and its theme is about
A. A. The Great Gatsby, the American Dream
B. B. Tender is the Night, love
C. C. Tales of the Jazz Age, the loss of oneself
D. D. The Beautiful and the Damned, the evil of human nature
【单选题】
Of the following writers, is NOT included in the group of naturalists.
A. A. Stephen Crane
B. B. Frank Norris
C. C. Theodore Dreiser
D. D. Herman Melville
【单选题】
Of the following, is NOT characteristic of Mark Twain’s works.
A. A. colloquial speech
B. B. a sense of humor
C. C. a realistic view
D. D. an idealistic view
【单选题】
Of the following, is considered Herman Melville’s masterpiece.
A. A. The Last of the Mohicans
B. B. The Legend of Sleepy Hollow
C. C. Moby Dick
D. D. Daisy Miller
【单选题】
Of the following, is NOT Nathaniel Hawthorne’s work.
A. A. The Scarlet Letter
B. B. The House of the Seven Gables
C. C. The Marble Faun
D. D. Nature
【单选题】
is regarded as “the father of American literature”.
A. A. James Fennimore Cooper
B. B. Ralph Waldo
C. C. Thomas Jefferson
D. D. Washington Irving
【单选题】
Of the following writers, are from the Colonial and Revolutionary Periods.
A. A. Benjamin Franklin & Edgar Ellen Poe
B. B. Edgar Ellen Poe & Jonathan Edwards
C. C. Benjamin Franklin & Jonathan Edwards
D. D. Edgar Ellen Poe & Washington Irving
【单选题】
The National Day of the United States falls on .
A. A. June 4th
B. B. July 4th
C. C. June 14th
D. D. July 14th
【单选题】
Of the following, is NOT among the three major radio and TV networks in America.
A. A. the National Broadcasting System (NBS)
B. B. the Public Broadcasting Service (PBS)
C. C. the Columbia Broadcasting System (CBS)
D. D. the American Broadcasting System (ABS)
【单选题】
is sold especially to the upper or upper-middle class and it has a reputation for its serious attitude and great bulk.
A. A. The Washington Post
B. B. The New York Times
C. C. Los Angeles Times
D. D. New York Daily News
【单选题】
Of the following universities, has NOT cultivated any American President yet.
A. A. Harvard University
B. B. Massachusetts Institute of Technology
C. C. Princeton University
D. D. Yale University
【单选题】
To get a bachelor’s degree, all undergraduate students are required to do the following except .
A. A. attending lectures and completing assignments
B. B. passing examinations
C. C. working for communities
D. D. earning a certain number of credits
【单选题】
Of the following, is NOT the responsibility of the board of trustees in U. S. institutions.
A. A. choosing the president
B. B. establishing policies for administrators and faculty
C. C. approving budget and other financial project
D. D. decide which student to enroll
【单选题】
Of the following, are NOT among the categories of American higher education.
A. A. universities and colleges
B. B. research institutions
C. C. technical institutions
D. D. community colleges
【单选题】
Higher education in the United States began with the founding of
A. A. Yale University
B. B. Harvard University
C. C. Princeton University
D. D. New York University
【单选题】
Of the following subjects, are NOT offered to elementary school students.
A. A. mathematics and languages
B. B. politics and business education
C. C. science and social studies
D. D. music and physical education
【单选题】
Formal education in the United States consists of , secondary and higher education.
A. A. kindergarten
B. B. public
C. C. elementary
D. D. private
【单选题】
At present, U. S. exports account for of the world’s total.
A. A. 10%
B. B. 15%
C. C. 20%
D. D. 25%
【单选题】
is not one of the three giants in American automobile industry.
A. A. Ford
B. B. General Motors
C. C. Chrysler
D. D. American Motors
【单选题】
The following statements are all true except .
A. A. Agribusinesses reflect the big, corporate nature of many farm enterprises.
B. B. Agribusinesses maintain a balanced trade pattern between agricultural imports and exports.
C. C. Agribusinesses range from one-family corporations to multinational firms.
D. D. Agribusinesses include a variety of farm businesses and structures.
【单选题】
About of American crops are for export.
A. A. half
B. B. one third
C. C. one fourth
D. D. one fifth
【单选题】
President Johnson tried to build a “Great Society” by introducing various programs like the following except .
A. A. Medicare
B. B. Food Stamps
C. C. Education Initiatives
D. D. Unemployment Pension
【单选题】
The following inventions took place during the “second indThe following inventions took place during the “second industrial revolution” except .
A. A. typewriter
B. B. telephone
C. C. electric light
D. D. refrigerator
【单选题】
The first National Bank of the United States was established with the urge of .
A. A. George Washington
B. B. Thomas Jefferson
C. C. Andrew Jackson
D. D. Alexander Hamilton
【单选题】
Chartered companies were NOT granted the by the British King or Queen.
A. A. political authority
B. B. economic rights
C. C. judicial authority
D. D. diplomatic authority
欢迎使用我爱刷题
×
微信搜索我爱刷题小程序
温馨提示
×
请在电脑上登陆“www.woaishuati.com”使用