更多“单选题For which of the following equations is x = -2 a root?I. 2/x-4II. x2 + 4=0III. x2 + 4x +4 = 0A I onlyB II onlyC III onlyD I and IIIE II and III”相关问题
  • 第1题:

    Which of the following operations need NOT to be entered on the Oil Record Book Part I? I、Disposal of oil residues. II、 Internal transfer of fuel oil

    A.I only

    B.II only

    C.both I and II

    D.neither I nor II


    正确答案:A

  • 第2题:

    C Co uses material B, which has a current market price of $0·80 per kg. In a linear program, where the objective is to maximise profit, the shadow price of material B is $2 per kg. The following statements have been made:

    (i) Contribution will be increased by $2 for each additional kg of material B purchased at the current market price

    (ii) The maximum price which should be paid for an additional kg of material B is $2

    (iii) Contribution will be increased by $1·20 for each additional kg of material B purchased at the current market price

    (iv) The maximum price which should be paid for an additional kg of material B is $2·80

    Which of the above statements is/are correct?

    A.(ii) only

    B.(ii) and (iii)

    C.(i) only

    D.(i) and (iv)


    正确答案:D

    Statement (ii) is wrong as it reflects the common misconception that the shadow price is the maximum price which should be paid, rather than the maximum extra over the current purchase price.

    Statement (iii) is wrong but could be thought to be correct if (ii) was wrongly assumed to be correct.

  • 第3题:

    The effective temperature of air is dependent upon ______. I. relative humidity II. air velocity

    A.I only

    B.II only

    C.Both I and II

    D.Neither I nor II


    正确答案:C

  • 第4题:

    决策的种类主要包括:() I.紧急决策; II.非紧急决策; III.日常决策; IV.普通决策;

    • A、I+II+III
    • B、II+III+IV
    • C、I+II+IV
    • D、I+II+III+IV

    正确答案:A

  • 第5题:

    植物纤维绳是()等植物纤维制成。 I.剑麻; II.大麻; III.棉花。

    • A、I、II
    • B、I、III
    • C、II、III
    • D、I、II、III

    正确答案:D

  • 第6题:

    雷达的()等部分要定期涂漆。 I.波导管; II.天线外罩; III.机座; IV.天线。

    • A、I~IV
    • B、I、II、III
    • C、II、III、IV
    • D、I、III、IV

    正确答案:B

  • 第7题:

    人为过失的种类主要包括()。I.基于知识的错误;II.基于法规的错误;III.基于技能的错误;IV.文化制约;

    • A、I+II+III
    • B、II+III+IV
    • C、I+III+IV
    • D、I+II+III+IV

    正确答案:D

  • 第8题:

    客户委托资产可以是客户合法持有的()等资产。 I.现金 II.债券 III.资产支持证券 IV.房产

    • A、I、III、IV
    • B、I、II、III、IV
    • C、I、II、III
    • D、II、IV

    正确答案:C

  • 第9题:

    会员、从业人员对自己报送的诚信信息的()负责。 I.真实性 II.准确性 III.完整性 IV.效益性

    • A、I、II、III、IV
    • B、I、II、IV
    • C、I、III、IV
    • D、I、II、III

    正确答案:D

  • 第10题:

    单选题
    Both passages include which of the following elements?I. a discussion of the importance of human feelings in a debateII. a citation of an authoritative scientific studyIII. a reference to global warming
    A

    I only

    B

    II only

    C

    I and II only

    D

    II and III only

    E

    I, II, and III


    正确答案: A
    解析:
    两篇文章都提到全球变暖,第一篇文章没有引用任何科学研究。然而两篇文章都讨论了人类情感的重要性。第一篇文章提到了辩论者妖魔化行为造成的损害以及他们欣赏他们对手的态度的需要。第二篇文章强调一些人从回收利用中获得的“良好的感觉”的确有价值。

  • 第11题:

    单选题
    With regard to the drivers behind Application Grid based computing, consider the following statements and indicate which is TRUE:// ()  I. data center complexity leads to lack of predictability making it difficult if not impossible to guarantee quality of service  II. data centers must do more with less and find a way to better utilize existing capacity  III. growth means added complexity
    A

     I and II

    B

     I and III

    C

     II and III

    D

     I, II and III


    正确答案: A
    解析: 暂无解析

  • 第12题:

    单选题
    If (c+1)2=-b, which of the following statement could be true?I. c>0II. c=0III. c<0
    A

    None

    B

    I only

    C

    III only

    D

    I and II only

    E

    I, II, and III


    正确答案: D
    解析:
    假设c=5,那么b=-36。假设c=0, b=-1。假设c=-5, b=-16。所以I. II. III都有可能。

  • 第13题:

    船舶的浮态有( )。

    I.正浮;

    II.横倾;

    III.纵倾;

    IV.纵横倾。

    A.I~IV

    B.I、II、III

    C.II、III、IV

    D.I、III、IV


    正确答案:A

  • 第14题:

    The following information is available for a manufacturing company which produces multiple products:

    (i) The product mix ratio

    (ii) Contribution to sales ratio for each product

    (iii) General fixed costs

    (iv) Method of apportioning general fixed costs

    Which of the above are required in order to calculate the break-even sales revenue for the company?

    A.All of the above

    B.(i), (ii) and (iii) only

    C.(i), (iii) and (iv) only

    D.(ii) and (iii) only


    正确答案:B

    The method of apportioning general fixed costs is not required to calculate the break-even sales revenue.

  • 第15题:

    融资融券业务客户的选择标准包括()。 I.工作状况 II.账户状态 III.信誉状况 IV.关联关系

    • A、I、III、IV
    • B、II、III、IV
    • C、I、II、III
    • D、II、IV

    正确答案:B

  • 第16题:

    船舶的浮态有()。 I.正浮; II.横倾; III.纵倾; IV.纵横倾。

    • A、I~IV
    • B、I、II、III
    • C、II、III、IV
    • D、I、III、IV

    正确答案:A

  • 第17题:

    通风筒口应尽量远离()。 I.排气管口; II.天窗; III.升降口。

    • A、I、II
    • B、II、III
    • C、I、III
    • D、I、II、III

    正确答案:D

  • 第18题:

    铲刀或刮刀可用于铲除()。 I.厚锈; II.薄锈; III.旧漆。

    • A、I、II
    • B、I、III
    • C、II、III
    • D、I、II、III

    正确答案:C

  • 第19题:

    With regard to the drivers behind Application Grid based computing, consider the following statements and indicate which is TRUE:// ()  I. data center complexity leads to lack of predictability making it difficult if not impossible to guarantee quality of service  II. data centers must do more with less and find a way to better utilize existing capacity  III. growth means added complexity

    • A、 I and II
    • B、 I and III
    • C、 II and III
    • D、 I, II and III

    正确答案:D

  • 第20题:

    证券业从业人员诚信信息包括()。 I.基本信息 II.奖励信息 III.人员财务信息 IV.处罚处分信息

    • A、I、II、III、IV
    • B、I、II、IV
    • C、I、III、IV
    • D、I、II、III

    正确答案:B

  • 第21题:

    效力期限内的诚信信息根据性质可以分为()。 I.公开信息 II.封闭信息 III.半公开信息 IV有限公开信息

    • A、I、II、III、IV
    • B、I、IV
    • C、I、III、IV
    • D、I、II、III

    正确答案:B

  • 第22题:

    单选题
    If m and n are positive integers and 3m+n-1=2m+2n, which of the following must be true?I. m and n are consecutive integers.II. m is even.III. n is odd.
    A

    None

    B

    I only

    C

    II only

    D

    III only

    E

    I, II, and III


    正确答案: D
    解析:
    Since m=n+1, where m and n are given as positive integers, Roman numeral choice I is true. Since, m=n+1, m can be either odd or even, hence choice II is false. Roman numeral choice III is also false since n can be either even or odd.

  • 第23题:

    单选题
    If 4 and 11 are the lengths of two sides of a triangular region, which of the following can be the length of the third side?I. 5II. 13III. 15
    A

    I only

    B

    II only

    C

    I and II only

    D

    II and III only

    E

    I, II, and III


    正确答案: D
    解析:
    根据三角形三边关系可知,9<c<15,故本题选B项。