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单选题Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?()A The mixture is too lean to burnB The mixture is too rich to burnC The vapor is about to explodeD Conditions are perfect for

题目
单选题
Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?()
A

The mixture is too lean to burn

B

The mixture is too rich to burn

C

The vapor is about to explode

D

Conditions are perfect for combustion

参考答案和解析
正确答案: B
解析: 暂无解析
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相似问题和答案

第1题:

Which of the following conditions is true concerning a flammable liquid with a concentration above the upper explosive limit?

A.The mixture is too lean to burn

B.The mixture is too rich to burn

C.The vapor is about to explode

D.Conditions are perfect for combustion


正确答案:B

第2题:

According to the passage, which of the following is NOT true?__________ 查

A.Social change tends to meet with more difficulty in basic and emotional aspects of society
B.Disagreement with and argument about conditions tend to slow down social change
C.Social change is more likely to occur in the material aspect of society
D.Social change is less likely to occur in what people learned when they were young

答案:B
解析:
根据第二段“social changes is also likely to occur more frequently and mole readily in thematerial aspects…in what has been learned later in life rather than what was learned early…in the less basic andless emotional aspects of society than in their opposites”可知A、C、D项都正确,而由第一段最后一句可知,不同的观点以及对现状不满可以加速社会变革.因此B项错误。

第3题:

Concerning baby-sitting and managing a paper route, which of the following statement is true?

A. Both call for daily service.

B. Both call for a sense of responsibility.

C. Neither is affected by bad weather.

D. Neither is helpful to character development.


正确答案:B
逻辑推理题。关于临时保姆和送报纸这两项工作,文中均有提到责任感的重要性,分别在第一段最后一句“This has its greatest...reliable,responsible and mature”(这项工作尤其适合女孩,一个可靠、负责和成熟的临时保姆可以挣到不少钱。)及最后一段第二句“The job also requires a sense of maturity and responsibility...”(这项工作同样需要成熟、稳重与责任感……)。

第4题:

The command frame-relay map ip 10.121.16.8 102 broadcast was entered on the router. Which of the following statements is true concerning this command()。

  • A、This command should be executed from the global configuration mode
  • B、The IP address 10.121.16.8 is the local router port used to forward data
  • C、102 is the remote DLCI that will receive the information
  • D、This command is required for all Frame Relay configurations
  • E、The broadcast option allows packets, such as RIP updates, to be forwarded across the PVC

正确答案:E

第5题:


Which of the following statements is true according to Tocqueville?( )

A.As social conditions and opportunities improve,social satisfaction grows more quickly.
B.Social mechanisms have seemingly conflicting nature.
C.As social conditions improve,there will be fewer people enjoy the social privilege.
D.As social conditions improve,the people will have more concentrated power.

答案:B
解析:
细节题。根据最后一段第一句social frustration increases as social conditions improve可知,A项错误;根据最后一段最后一句He wrote that this growing hatred of social privilege,as social conditions improve,leads to the state concentrating more power to itself可知,享有特权的不是人民而是state本身,故D项错误;全文并未提及“享受特权的人数”问题,因此C项错误。故本题选B。参考译文:法国政治科学家、历史学家、哲学家和政治家阿历克西·德·托克维尔以一本四卷册的书《美国的民主》闻名于世。他于1831年来到美国,研究美国的民主形式及其对世界其他地方的意义。在仅仅九个月的访问之后,他完成了一本非凡的作品,至今被奉为经典。托克维尔有着非同寻常的观察力。他不仅描述了政府的民主制度及其运作方式,而且还描述了它对美国人的思考、感受和行为的影响。许多学者认为,托克维尔对美国传统信仰和价值观的理解比任何其他描写美国的人都要深刻。尤其引人注目的是,他在近200年前观察到的这些许多特征今天在美国人身上仍然可见且具有重大意义。他的观察也很重要,因为他访问的时间-19世纪30年代——是在美国工业化之前。这是小农、商人和西部边疆定居的时代,是一个新国家的传统价值观新建立的历史时期。在美国宪法通过大约40年后的短短一代人时间里,这种新的政府形式产生的社会中,人人都有独特的价值观。然而,他是一位中立的观察者,看到了这些品质的两面性。《美国的民主》的第一部分写于1831-1832年,出版于1835年。这本书对美国政府和社会进行了非常积极和乐观的描述,大受欢迎。他试图一瞥美国社会的本质,同时宣扬自己的哲学:阶级平等和不可避免的、根深蒂固的贵族特权。他用了四年时间才完成这本书的剩余部分,并于1840年出版第二部分。第二部分比第一部分更加悲观,他警告了专制和政府集权的危险,并将他的观点和批评直指法国。因此,除了在英国受到高度赞扬之外,它没有像第一部分那样受到欢迎。《美国的民主》着重分析为什么共和党代议制民主在美国取得了成功,但在许多其他地方却失败了。托克维尔指出,宗教在美国能发挥强大作用是因为它与政府分离,所有党派都认同这种分离。他将此与法国作对比,在法国,他认为民主党和宗教之间存在不健康的对立,这与教会和国家之间的联系有关。托克维尔还概述了人类可能过度追求平等,预示着20世纪会产生极权主义国家。托克维尔观察到社会机制存在矛盾,这在后来被称为“托克维尔效应”,即“随着社会条件的改善,社会挫折感也会增加”。他写道,随着社会条件的改善,这种对社会特权日益增长的仇恨导致国家将更多的权力集中到自己身上。

第6题:

Which statement is TRUE concerning the flash point of a substance ________.

A.It is lower than the ignition temperature

B.It is the temperature at which a substance will spontaneously ignite

C.It is the temperature at which a substance,when ignited,will continue to burn

D.It is the temperature at which the released vapors will fall within the explosive range


正确答案:A

第7题:

Which of the following is Not True?

A. Advertisement makes contribution to our pockets and we may know everything
B. We can buy what we want
C. Products of good quality don't need to be advertised
D. Advertisement makes our life colorful
19. Which of the following is Not True?

答案:C
解析:
A、B、D项均可在文中找到依据;C项说法错误,优质产品也可能需要广告的宣传。

第8题:

All the following statements concerning the nature of language change is true except()

A language change is inevitable

B language change is abrupt

C language change is universal

D language change is extensive


答案:B

第9题:


Which of the following concerning natural gas is NOT true?( )

A.It was not favored in the past.
B.It is easily affected by the change of the climate.
C.People are beginning to realize its value.
D.It is increasingly cheaper to be liquefied.

答案:B
解析:

第10题:

Which statements concerning the relationships between the following classes are true?()   class Foo {  int num;   Baz comp = new Baz();   }   class Bar {  boolean flag;   }   class Baz extends Foo {   Bar thing = new Bar();   double limit;   }  

  • A、A Bar is a Baz.
  • B、A Foo has a Bar.
  • C、A Baz is a Foo.
  • D、A Foo is a Baz.
  • E、A Baz has a Bar.

正确答案:C,E

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