脱氢反应是体积增加的反应,因此降低反应压力有利于提高转化率。

题型:判断题

问题:

脱氢反应是体积增加的反应,因此降低反应压力有利于提高转化率。

考点:苯乙烯装置操作工脱氢反应脱氢反应题库
题型:判断题

选出下列句子中画线成语运用有误的一项  [ ]

A.他曾历经国运之变幻,阅尽人事之沉浮,一生殚精竭虑,用科技增强了中国的综合国力和军事实力,为中国的稳定打下了坚实基础。   

B.金无足赤,人无完人,我们在接受自我、把握自我的同时也要勇敢地接受自我的缺陷。  

C.打开电视,广告之多令人目不暇接,甚至在所谓的“黄金时刻”,也往往是广告独占鳌头。  

 D.虽然这次成功了,但是我们不能过于得意,否则会否极泰来

题型:判断题

阅读下列材料,从所给的六个选项(A、B、C、D、E和F)中,选出符合各小题要求的最佳选项,并在答题卡上将该项涂黑。选项中有一项是多余选项。

请阅读某书店各书架的相关信息:

A. Section One: Do-It-Yourself Section -- On these shelves customers can find the latest manuals on how to do everything from building a computer to constructing your own home.

B. Section Two: Sports & Leisure Section --- Stocks a large range of the latest books on your favorite sporting teams and events. Pick up the perfect Father's Day present here.

C. Section Three: Humor Section --- A great selection of joke books, funny stories and wonderful real life adventures that are sure to keep the reader laughing for days.

D. Section Four: Business & Finance --- Students, business people or anyone interested in the world of commerce are certain to find the book they are after here. We have special subsection for international trade and e-commerce.

E. Section Five: Biography --- Find out about the lives of your favorite sports stars, singers, actors and other famous people from today and the past. Learn what they had to go through to become successful and the effect it had on their lives.

F. Section Six: Education --- Has a huge range of textbooks and supplementary material covering all the major high school and university subjects. Buyers showing their student cards receive a 15% discount on all purchases from this section.

阅读下列关于各书籍的信息,匹配书籍与其所应放置的书架:

___1. The Delighted Eye --- by Prof. John Nash --- The 1994 Nobel Prize Winner for Economics, whose ideas have influenced a generation of the world's greatest economic minds, tells his life story: growing up in a small town in America, becoming one of America's most influential mathematicians and his battles with mental illness.

___2. Mother Tongue: The English Language --- by Bill Bryson --- Bryson's book is a journey through the history and different aspects of the English language , one that is both informative and hugely entertaining. As with most of Bryson's books, fun comes before facts and readers will be left with a smile on their faces.

___3. Into Thin Air --- by John Krakauer --- is a riveting first-hand account of a disastrous race to the top of Mount Everest. In March 1996, Outside magazine sent veteran journalist and experienced climber John Krakauer to join the team led by the famous Everest guide Rob Hall. Despite the expertise of Hall and the other leaders, by the end of the race eight people were dead.

___4. Ready Made: How to Make (Almost) Everything --- by Shoshanna Berger and Grace Hawthorne --- beautifully written with great factual information. The theme behind this book is re-use, re-claim, re-cycle and there are many detailed easy-to-do projects for the reader to try such as making a photo frame from a book cover or a pot for your plants from plastic shopping bags.

____5. The Smartest Guys in the Room: The Amazing Rise and Scandalous Fall of Enron --- by Bethany McLean and Peter Elkind --- As the title suggests the authors cover the rise of the American electricity company to become one of the 10 richest companies in the world and its spectacular fall into dishonour and bankruptcy. A perfect guide on what not to do in business.

题型:判断题

下列属于半纤维素的是()。

A.棉子糖

B.海藻糖

C.水苏糖

D.戊聚糖

E.麦芽糖

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钻井液的n值越低,层流流型越差。

题型:判断题

投资咨询人员给出合理建议的依据是什么?

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