液化石油气作为燃料,已进入千家万户,它是含有下列物质的混合物,常温下,它们的沸点

题型:选择题

问题:

液化石油气作为燃料,已进入千家万户,它是含有下列物质的混合物,常温下,它们的沸点如表所示:

物质名称乙烷丙烷丁烷戊烷巳烷
沸点/℃-88.6-42.2-0.536.169.2
在常温下使用至无气体放出时,钢瓶中常有一些残液,它最有可能是(  )

A.乙烷

B.己烷

C.乙烷、丙烷、丁烷

D.戊烷、己烷

考点:燃料的利用和新能源的开发物理性质和化学性质的区别和应用
题型:选择题

Before you speak to any audience, you should learn as much about its members as possible. Only in that way can you best adapt the level of your language and the content of your talk to your listeners.

41. Speaking to someone you know well. ______

Where are you likely to speak Certainly, in this class you’ll give several talks, and since you know most, ff not all, of the students, you should face no major problems in adapting your approach to them. Another speaking possibility exists in your workplace.

A third speaking possibility exists in any organization (social, cultural, athletic, and so on ) that you belong to. You may be asked to speak at the next meeting or at the annual banquet. Here again, you know the people involved, their background, their education level, and their attitudes and that’s a tremendous advantage for you. Since we’re upbeat and positive in this course, we’ll assume that you’ve given successful talks under all three circumstances, and with this course under your belt, you can do it again. Since good speakers are hard to. find and word about them travels fast, suppose that one day you get an invitation to speak to an organization in which you don’t know a soul. What do you do now If you feel able to handle the topic you’re asked to speak on, accept this rare challenge. Here’s where audience analysis comes into play. Be sure to ask the person who invited you for information on the members, information that encompasses a broad spectrum, such as in the following areas.

42. How old are your listeners ______

43. Sex composition of your listeners. ______

44. Interest in topic.

45. Interests or hobbies of the listeners.

[A] If you’re invited to speak to a women’s or men’s organization, you know the answer to this question at once. Quite often, however, audiences are mixed fairly evenly, although at times one sex may predominate.

[B] Do members of your prospective audience spend evenings watching TV movies and drinking beer at a local tavern, or do they read the Harvard Classics and attend concerts of Beethoven and Mozart Do they play bingo and 21, or do they pursue the questions the intriguing intricacies of contract bridge and chess Answers to these questions can help you choose the most appropriate material and language for your audience. Your choices can be crucial in determining the success or failure of your presentation.

[C] Are the members recent college graduates, senior citizens, or business executives in midcareer Just remember, age exerts a powerful impact on people’s attitudes, values and motivations.

[D] For example, your department manager may ask you to explain and demonstrate a procedure to some fellow employee. Or she may select you to address your department on behalf of the local blood donor drive. In both speech situations--in class and on the job— you’re familiar with your audience; you speak their language; you have things in common with them.

[E] Are you aware of the educational background of your audience How many of them have doctoral degrees, master degrees or bachelor degrees This will decide what kind of language you should adopt and how much they can understand.

[F] Are the members of the organization interested in the topic or are they required to attend regardless of their interest If the latter is true, what types of material will most likely pique their curiosity

45

题型:选择题

根据文学常识填空。

(1)“花和尚倒拔垂杨柳,豹子头误入白虎堂”是名著《________》中的一个回目,其中“豹子头”指的是________。

(2)《三国演义》的作者是________,其中“过五关斩六将”的是________。

(3)我国古典名著《西游记》的作者是________,主要记述了唐僧师徒四人历经________(多少)难,战胜各路________,终于取回真经的故事。这本名著中我最喜欢的故事有《________》。

(4)“满纸荒唐言,一把辛酸泪。都云作者痴,谁解其中味。”这是我国古典文学名著《________》的开卷诗。

题型:选择题

下列不征收消费税的是( )

A.翻新轮胎

B.铂金首饰

C.手工卷烟

D.无醇啤酒

题型:选择题

按法-美-英(FAB)协作组诊断分型,急性髓系白血病(AML)-M1的诊断需满足()

A.骨髓原始粒细胞(Ⅰ+Ⅱ型)≥90%(NEC.

B.原始细胞过氧化物酶(POX)和苏丹黑(SBB.染色阳性率≥3%

C.原始细胞过碘酸-雪夫(PAS)染色阳性

D.骨髓早幼粒以下各阶段粒细胞或单核细胞<10%

E.存在Auer小体

题型:选择题

食管癌主要诊断方法是()

A.气管镜

B.纤维食管镜

C.B超

D.食管钡餐X线检查

E.食管拉网脱落细胞检查

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