Organization Behavior 15e Chapter 5 Testbank

According to Gordon Allport, ________ is defined as the dynamic organization within the individual of those psychophysical systems that determine a person's unique

adjustments to his/her environment.

A) cognitive dissonance

B) heredity

C) personality

D) descent

E) genealogy

C) personality

Who defined personality as the dynamic organization within

the individual of those psychophysical systems that determine a person's unique adjustments to his/her environment?

A) Leon Festinger

B) Dr. Sigmund Freud

C) Gordon Allport

D) Abraham Maslow

E) Ivan Pavlov

C) Gordon Allport

________ is the sum total of ways in which an individual

reacts to and interacts with others.

A) Talent

B) Skill

C) Knowledge

D) Heredity

E) Personality

E) Personality

Esther Lugo has gone for an interview at an advertising firm in

Manhattan and has been asked to complete a self-report survey

to help interviewers understand if she is the right candidate for

the job. From the interview, they have found that she is extroverted, empathic, scrupulous, and cooperative in nature, which are key characteristics needed for the job. These characteristics about Lugo indicate her ________.

A) talent

B) skill

C) knowledge

D) genealogy

E) personality

E) personality

Which of the following is the most common means of

measuring personality?

A) in-depth interviews

B) self-report surveys

C) career portfolio

D) reference interviews

E) stress interviews

B) self-report surveys

Which of the following is a drawback of self-report surveys?

A) They can hold only a limited number of questions.

B) They involve a large number of people in the evaluation process.

C) They may have biased results if the surveyor's judgment is biased.

D) They comprise a large number of complex statistical data.

E) They may result in the respondent lying to create a good impression.

E) They may result in the respondent lying to create a good impression.

In ________, a co-worker or another observer does an

independent assessment of personality, with or without the subject's knowledge.

A) observer-ratings surveys

B) paid surveys

C) knowledge surveys

D) deviation surveys

E) cadastral surveys

A) observer-ratings surveys

Tracy Winter works at a publishing firm in London and

recently received an e-mail from the human resource department of her company asking her to study the behavior of a colleague, Cindy Camp, including her attention toward her work, without Camp's knowledge. Winter now needs to scrutinize Camp's behavior and notice if she is free from distractions and pays sufficient attention to her tasks. Which of the following is Winter conducting?

A) observer-ratings survey

B) informational interview

C) knowledge survey

D) participant observation

E) focus group survey

A) observer-ratings survey

Which of the following terms refers to factors such as one's

biological, physiological, and inherent psychological makeup

determined at conception?

A) social identity

B) heredity

C) behavioral contagion

D) self-concordance

E) social loafing

B) heredity

Which of the following statements is true about personality?

A) Personality is free from the influence of the environment.

B) Personality remains constant over time.

C) Personality can be measured solely through personal interviews.

D) Personality is influenced by hereditary factors.

E) Parents highly influence the development of their offspring's personality.

D) Personality is influenced by hereditary factors.

Which of the following does the heredity approach state?

A) An individual's personality is determined by the social background one is brought up in.

B) An individual's personality is determined by molecular structure of the genes.

C) An individual's personality is influenced by the economic settings he/she is surrounded by.

D) A person's personality traits are created by the company

he/she keeps i.e., his/her friends and family.

E) A person's personality traits are largely influenced by global trends and characteristics.

B) An individual's personality is determined by molecular structure of the genes.

The ________ is a personality assessment consisting of 100

questions where respondents are classified as extraverted or introverted, sensing or intuitive, thinking or feeling, and judging or perceiving.

A) Myers-Briggs Type Indicator

B) Birkman Method

C) Karolinska Scales of Personality

D) Keirsey Temperament Sorter

E) Taylor-Johnson Temperament Analysis

A) Myers-Briggs Type Indicator

According to the Myers-Briggs Type Indicator (MBTI)

classification, people belonging to the ________ type are practical and prefer routine and order and focus on details.

A) sensing

B) extraverted

C) feeling

D) perceiving

E) intuitive

A) sensing

According to the Myers-Briggs Type Indicator (MBTI)

classification, people belonging to the ________ type are flexible and spontaneous.

A) thinking

B) judging

C) introverted

D) sensing

E) perceiving

E) perceiving

According to the Myers-Briggs Type Indicator (MBTI)

classification, people belonging to the judging type ________.

A) are quiet, shy and introverted

B) rely on unconscious processes

C) prefer their world to be ordered

D) are flexible and spontaneous

E) rely on personal values and emotions

C) prefer their world to be ordered

Which of the following are characteristics of the intuitive type

of people according to the Myers-Briggs Type Indicator (MBTI) classification?

A) prefer routine and order and focus on details

B) outgoing, sociable, and assertive in nature

C) rely on unconscious processes and look at the overall picture

D) use reason, rationality, and logic to handle problems and situations

E) rely on their personal values and emotions to make decisions

C) rely on unconscious processes and look at the overall picture Ellen Athers works as a communication executive at a travel

house. She is known to be friendly with her colleagues and interacts with them regularly to build strong work relationships. She knows that her rapport with her co-workers is a crucial part of her work and invests time in these relationships. In addition, she is assertive in making decisions, and colleagues take her decisions seriously. Which of the following types is Athers most likely to be characterized as according to the

Myers-Briggs Type Indicator (MBTI) classification?

A) perceiving

B) brooder

C) extraverted

D) introverted

E) solitary

C) extraverted

Elaine Chamberlain works as a research executive at an

environmental organization. Though her colleagues are helpful and friendly, because of her shy nature, she often eats her lunch at her desk and has limited interactions with them. She

is glad that her nature of work does not require her to interact with her co-workers to a high extent. Which of the following types is Chamberlain most likely to be characterized as according to the Myers-Briggs Type Indicator (MBTI) classification?

A) social

B) introverted

C) exhibitionist

D) gregarious

E) extraverted

B) introverted

Valerie Sinclair, a climate campaigner at an environmental

organization, invariably uses rationale to make decisions for project implementation. She believes that the right decisions can be made only through scrutiny and analysis. Each time she needs to make a decision, she weighs all options before taking action. Which of the following is a characteristic of Sinclair's personality type according to the Myers-Briggs Type Indicator (MBTI) classification?

A) intuitive

B) introverted

C) thinking

D) feeling

E) perceiving

C) thinking

Amber Downing, a human resource executive, is in charge of

the recruitment process in her organization. During the hiring process, she often needs to coordinate with prospective employees. The organizational process does not require her to inform employees who do not get through the selection process. However she believes that it is rude not to give them an update. She thus makes sure that she sends them e-mails informing

them about the selection process. Which of the following types is Downing characterized as according to the Myers-Briggs Type Indicator (MBTI) classification?

A) sensing

B) judging

C) thinking

D) feeling

E) introverted

D) feeling

According to the Myers-Briggs Type Indicator (MBTI)

classification, introverted-intuitive-thinking-judging type of people are ________.

A) visionaries

B) organizers

C) conceptualizers

D) executors

E) methodists

A) visionaries

People with an ESTJ personality type are characterized as

________ according to the Myers-Briggs Type Indicator

(MBTI) classification.

A) irrational

B) perplexed

C) decisive

D) disoriented

E) emotional

C) decisive

According to the Myers-Briggs Type Indicator (MBTI)

classification, people with an ENTP personality type are most

likely to be ________.

A) illogical

B) innovative

C) intuitive

D) skeptical

E) stubborn

B) innovative

What does the Myers-Briggs Type Indicator classification of "E

or I" stand for?

A) enthusiastic/ingenious

B) emotional/impulsive

C) extraverted/introverted

D) emotive/illustrative

E) empathetic/innovative C) extraverted/introverted

What does the Myers-Briggs Type Indicator classification of S

versus N stand for? A) sensing/intuitive

B) social/perceiving

C) stable/negligent D) sympathetic/thinking

E) shrewd/feeling

A) sensing/intuitive

What is the major problem with the Myers-Briggs Type

Indicator as a measure of personality?

A) It has an excess of classifications, which tends to confuse a person.

B) It forces a person to be categorized as either one type or another. C) It does not have a clear demarcation between different personality types. D) It tends to overemphasize intuitive traits over analytical traits.

E) It indicates results related exclusively to job performance. B) It forces a person to be categorized as either one type or another.

The ________ is a personality assessment model that taps

basic dimensions which encompass most of the significant variation in human personality, namely extraversion,

agreeableness, conscientiousness, emotional stability, and openness to experience.

A) Myers-Briggs Type Indicator

B) Big Five model C) Birkman method

D) Keirsey Temperament Sorter

E) Forté Profile B) Big Five model

Which dimension of the Big Five model refers to an

individual's propensity to defer to others? A) conscientiousness

B) agreeableness

C) extraversion D) openness to experience

E) emotional stability

B) agreeableness

Which dimension of the Big Five model is a measure of

reliability?

A) extraversion

B) agreeableness

C) conscientiousness

D) openness to experience

E) emotional stability

C) conscientiousness

According to the Big Five model, a highly conscientious person

is most likely to be ________.

A) distracted, disorganized, and unreliable

B) calm, self-confident, and secure

C) cold, disagreeable, and antagonistic

D) responsible, organized, and dependable

E) reserved, timid, and quiet

D) responsible, organized, and dependable

According to the Big Five model, a person who scores

________ is easily distracted, disorganized, and unreliable.

A) low on emotional stability

B) low on openness to experience

C) high on agreeableness

D) high on extraversion

E) low on conscientiousness

E) low on conscientiousness

Which of the following dimensions of the Big Five model

indicates a person's ability to withstand stress?

A) emotional stability

B) extraversion

C) openness to experience

D) agreeableness

E) conscientiousness

A) emotional stability

According to the Big Five model, the ________ dimension

addresses a range of interests and fascination with novelty.

A) emotional stability

B) extraversion

C) openness to experience

D) agreeableness

E) conscientiousness

C) openness to experience

Marina Lyon works as a reservation executive at a travel and

tourism company. Though her job requires her only to efficiently book flight tickets for customers, she has also opted to undergo training to learn the process of hotel reservations.

In addition, every evening she reads travelogues to be aware of upcoming travel destinations and trends. She loves the industry she works in and is eager to learn as much as she can. Considering the information given in this case, which dimension of the Big Five model best describes Lyon's personality?

A) extraversion

B) agreeableness

C) conscientiousness

D) openness to experience

E) emotional stability

D) openness to experience

________ has been found to be more important than other

traits in the success of CEOs of private equity companies.

A) Extraversion

B) Agreeableness

C) Conscientiousness

D) Emotional stability

E) Openness to experience

C) Conscientiousness

Which of the following is most likely to be a drawback of highly

conscientious people according to the Big Five model?

A) They engage in numerous risky behaviors, such as smoking and drinking.

B) They tend to indulge in irresponsible behavior and be disorganized.

C) They do not adapt well to changing contexts.

D) They focus on learning instead of performing a job efficiently.

E) They excessively emphasize being creative.

C) They do not adapt well to changing contexts.

Among the Big Five model traits, ________ is most strongly

related to life satisfaction, job satisfaction, and low stress levels.

A) extraversion

B) agreeableness

C) conscientiousness

D) emotional stability

E) openness to experience

D) emotional stability

With reference to the Big Five Model, which of the following is

a difference between highly agreeable and less agreeable people?

A) Highly agreeable people tend to do better in interpersonally oriented jobs than less agreeable people.

B) Highly agreeable people are less compliant and less rule abiding than less agreeable people.

C) Highly agreeable people tend to be less satisfied in their jobs than less agreeable people.

D) Highly agreeable people engage in less organization citizenship behavior than less agreeable people.

E) Highly agreeable people have more tendency to engage in organizational deviance than less agreeable people.

A) Highly agreeable people tend to do better in interpersonally oriented jobs than less agreeable people.

Which of the following differentiates introverts from extraverts?

A) Introverts tend to be happier in their jobs in comparison to extraverts.

B) Introverts express feelings more freely compared to extraverts.

C) Introverts experience more positive emotions than extraverts.

D) Introverts are generally more assertive than extraverts.

E) Introverts are less impulsive than extraverts.

E) Introverts are less impulsive than extraverts.

People scoring high on the ________ dimension of the Big

Five model are more likely to be absent from work and engage

in risky behavior than those who score low.

A) agreeableness

B) conscientiousness

C) openness

D) extraversion

E) emotional stability

D) extraversion

________ refers to bottom-line conclusions individuals have

about their capabilities, competence, and worth as a person.

A) Core self-evaluation

B) Authoritarianism

C) Self-monitoring

D) Machiavellianism

E) Agreeableness

A) Core self-evaluation

Which of the following statements is true about people with

positive core self-evaluations?

A) They are committed to their goals and set ambitious goals.

B) They view themselves as powerless over their environment.

C) They tend to question their capabilities and capacities.

D) They lack persistence to achieve goals.

E) They tend to be disliked by superiors and co-workers.

A) They are committed to their goals and set ambitious goals.

Which of the following personality traits indicates the degree to

which a person is unemotional and pragmatic and believes that ends can justify means?

A) extraversion

B) Machiavellianism

C) agreeableness

D) self-concordance

E) narcissism

B) Machiavellianism

A high Mach would be most productive in which of the

following positions?

A) a manager who leads team members in different geographic locations

B) an executive who has to follow stringent rules while closing a sale

C) a legal liaison who works from home and coordinates with people through the phone

D) a freelance researcher whose work is free from interpersonal communication

E) a sales person whose major part of the salary consists of sales commission

E) a sales person whose major part of the salary consists of sales commission

________ refers to the tendency to be arrogant, have a

grandiose sense of self-importance, require excessive admiration, and have a sense of entitlement.

A) Asceticism

B) Stoicism

C) Cynicism

D) Narcissism

E) Machiavellianism

D) Narcissism

During an annual review, Michel Godfrey made the following

assertion: "When I look at myself and my performance, I see that what I have achieved is outstanding and something no one in the organization has the capacity to undertake. Surprisingly, it has not won me the admiration of my colleagues like it should have. I also believe that I do not just deserve a raise, but need one, since without me, let's face it, the place would simply fall apart." Which of the following personality traits best describes Michel's personality?

A) minimalism

B) monasticism

C) stoicism

D) narcissism

E) Machiavellianism

D) narcissism

Which of the following is true about narcissists?

A) They go out of their way to be helpful to colleagues.

B) They have an inferiority complex about themselves.

C) They are more likely to emerge as leaders.

D) They do not require admiration or importance of people.

E) They are meek, timid, and shy in nature.

C) They are more likely to emerge as leaders.

Individuals scoring ________ have a strong ability to adjust

their behavior to external, situational factors and can behave differently in different situations.

A) low on openness

B) high on narcissism

C) low on agreeableness

D) high on self-monitoring

E) low on conscientiousness

D) high on self-monitoring

Individuals low in self-monitoring ________.

A) tend to display their true dispositions and attitudes in every situation

B) are pragmatic, maintain emotional distance, and believe ends can justify means

C) have a grandiose sense of self-importance, require excessive admiration, and are arrogant

D) are easily distracted, disorganized, and unreliable

E) tend to dislike themselves and view themselves as powerless over their environment

A) tend to display their true dispositions and attitudes in every situation

As compared to high self-monitors, low self-monitors

________.

A) tend to be more adaptable to external situations

B) pay closer attention to the behavior of others

C) have low consistency between personalities and actions

D) are less likely to emerge as leaders

E) show less commitment to their organizations

D) are less likely to emerge as leaders

Jonah is currently trying to decide whether or not to allow Kate

to be part of a delegation that will represent their company at an international business expo. Apart from allowing the company to market its business to potential clients, the expo will give the members of the delegation a chance to meet and network with various industry professionals and gain valuable industry insights.

Which of the following, if true, would most weaken Kate's chances of being selected?

A) Kate is socially inept and tends to display her true disposition and attitude in every situation.

B) Kate behaves differently in different situations and occasionally presents striking contradictions between her public persona and her private self.

C) Kate has a strong sense of independence and often gets work done without any support from others.

D) Kate is often in agreement with others' ideas and opinions.

E) Kate is gregarious and comfortable in changing contexts and ambiguous situations.

A) Kate is socially inept and tends to display her true disposition and attitude in every situation.

Which of the following, if true, would most strengthen Kate's

chances of being selected?

A) Kate generally considers herself to be better than her colleagues.

B) Kate is a go-getter—she is prepared to go to any length to get ahead.

C) Kate has a conventional mindset and focuses on being efficient at her work.

D) Kate often conforms to others' ideas and opinions rather than come up with her own.

E) Kate is enterprising and adept at interacting with diverse groups of individuals. E) Kate is enterprising and adept at interacting with diverse groups of individuals.

John Hardley recently joined as marketing director of H2O, a

water sports gear company. Though in the last five years the company has had a drastic dip in sales, ever since Hardley has joined he has turned the figures around. In addition to revamping the look of the brand, he has initiated several marketing campaigns through broadcast media to increase customer base for the company. Over the past 6 months, Hardley has managed to get the company to an all-time high peak of sales. Which of the following statements best describes Hardley?

A) Hardley is a low self-monitor.

B) Hardley is a narcissist. C) Hardley scores high in Machiavellianism.

D) Hardley has a proactive personality.

E) Hardley is a low risk-taking person. D) Hardley has a proactive personality.

Those with a ________ personality identify opportunities,

show initiative, take action, and persevere until meaningful change occurs, compared to others who passively react to situations.

A) high self-monitoring B) proactive

C) high Mach D) type A

E) narcissist

B) proactive

Which of the following statements is most likely to be true

regarding people with proactive personalities?

A) They react passively to situations.

B) They tend to display their true dispositions and attitudes in every situation.

C) They tend to be selfish and exploitive and believe others exist for their benefit.

D) They are more likely than others to be seen as leaders. E) They are narcissistic in nature and require constant admiration.

D) They are more likely than others to be seen as leaders.

Mara is looking to send one of her team members on an international assignment to China to train a group of employees located at her company's office in Beijing. As part of

the assignment, the chosen employee will have to undergo a 3-week diversity training program to help him/her learn about his/her new environment. Bryan, one of Mara's colleagues, is interested in taking up the assignment.

Which of the following, if true, would reduce the likelihood that

Bryan will be selected?

A) Bryan has had little exposure to Chinese culture.

B) Bryan is proficient in Chinese.

C) Bryan traveled to Beijing last year on a different assignment.

D) Bryan does not cope very well in ambiguous situations.

E) Bryan sometimes displays striking contradictions between his public persona and his private self.

D) Bryan does not cope very well in ambiguous situations. Which of the following, if true, would increase the likelihood

that Bryan will be selected?

A) Bryan's application was rejected the last time he applied for

an international assignment.

B) Bryan has trained several employees in the last six months.

C) Bryan has had little exposure to Chinese culture.

D) Bryan displays striking contradictions between his public persona and his private self.

E) Bryan is quite sociable and can "think on his feet."

E) Bryan is quite sociable and can "think on his feet."

John Holland's personality-job fit theory presents six

personality types. Which of the following is one of these six

types?

A) analytic

B) imaginative

C) practical

D) investigative

E) intuitive

D) investigative

With reference to John Holland's personality-job fit theory,

people belonging to the realistic type will be most suitable for

the job of a(n) ________.

A) economist

B) teacher

C) mechanic

D) lawyer

E) biologist

C) mechanic

Help Aid, a non-profit organization in Indonesia, works at

providing education in underdeveloped countries. They are

now looking to hire a teacher who can educate children in Namibia and prepare them for jobs which will enable them to sustain themselves. According to Holland's personality-job fit theory, people belonging to which of the following personality types will best suit Help Aid's requirement?

A) conventional

B) realistic

C) enterprising

D) artistic

E) social

E) social

With reference to John Holland's personality-job fit theory,

people belonging to the ________ type prefer verbal activities in which there are opportunities to influence others and attain powers.

A) realistic

B) conventional

C) artistic

D) enterprising

E) investigative

D) enterprising

With reference to John Holland's personality-job fit theory,

people belonging to the investigating type prefer ________.

A) activities that involve helping and developing others

B) activities that involve thinking, organizing, and understanding

C) physical activities that require skill, strength, and coordination

D) ambiguous and imaginative activities that allow creative expression

E) activities in which there are opportunities to influence

others

B) activities that involve thinking, organizing, and understanding With reference to the Hofstede's framework, a class or caste

system that discourages upward mobility is more likely to exist in a nation that scores ________.

A) high on individualism

B) low on masculinity

C) high on power distance

D) low on uncertainty avoidance

E) high on long-term orientation

C) high on power distance

Alex was sent to Beijing to help local managers solve the

problem of growing worker dissatisfaction at their manufacturing facility located in the city. As part of his visit, he decided to have a town hall meeting with the workers to understand the problems that they were facing and the reasons for their discontent. The turnout at the meeting was substantial; however, when asked for their opinions and suggestions, the crowd fell silent. As a result, Alex was unable to determine the reason for employee dissatisfaction. Which of the following, if true, best explains this situation?

A) A small portion of the workers at the facility belong to the baby boomers generation.

B) There is an unequal distribution of power in the company.

C) The employees are genuinely concerned about improving their lot.

D) Alex was sent to Beijing as he was one of the few employees who were conversant in the local language.

E) On previous occasions, the company has yielded to employee demands.

B) There is an unequal distribution of power in the company. With reference to the Hofstede's Framework for Assessing

Cultures, ________ emphasizes a tight social framework in which people expect others in groups of which they are a part

to look after them and protect them.

A) uncertainty avoidance

B) long-term orientation

C) masculinity

D) collectivism

E) power distance

D) collectivism

According to Hofstede's framework, ________ indicates the

degree to which people in a country prefer structured over unstructured situations.

A) collectivism

B) power distance

C) long-term orientation

D) uncertainty avoidance

E) individualism

D) uncertainty avoidance

T/F: A drawback of self-report surveys is the level of accuracy.

True

T/F: As compared to observer-ratings surveys, self-reporting

surveys are a better predictor of success on the job.

False

T/F: According to the Myers-Briggs Type Indicator

classification, people belonging to the feeling type use reason and logic to solve problems.

False

T/F: According to the Myers-Briggs Type Indicator (MBTI)

classification, people belonging to the judging type prefer control and like their world to be ordered and structured. True

T/F: According to the Big Five model, a person who scores high

on the openness to experience dimension is conventional and finds comfort in the familiar.

False

T/F: According to the Big Five model, the agreeableness

dimension refers to an individual's propensity to defer to others.

True

T/F: The conscientiousness dimension of the Big Five model

captures a person's comfort level with relationships.

False

T/F: According to the Big Five model, a drawback of introverts

is that they tend to be more impulsive than extraverts and engage in risky behavior.

False

T/F: People with positive core self-evaluations feel that they

are powerless over their environment.

False

T/F: High Machs do exceptionally well in jobs which are administrative in nature and do not involve face-to-face communication.

False

T/F: High Mach employees win in the short term, but lose the

gains in the long term because they are not well liked. True

T/F: The degree to which norms, cues, or standards dictate

appropriate behavior is known as consistency. False

T/F: Research suggests that personality traits better predict

behavior in weak situations than in strong ones. True

T/F: An organization in a dynamic and changing environment

that needs employees who can easily change tasks and teams should seek individuals with personalities that fit with the organization's overall culture rather than with a specific task. True

T/F: According to John Holland's personality-job fit theory,

individuals belonging to the realistic type are disorderly, impractical, and emotional.

False

T/F: According to John Holland's personality-job fit theory,

individuals belonging to the conventional type prefer ambiguous activities that allow creative expression. False

T/F:According to Hofstede's framework, individualism

describes the degree to which people in a country accept that power in institutions and organizations is distributed unequally.

False

T/F: According to Hofstede's five value dimensions of national

culture, people in a culture with long-term orientation look to the future and value thrift, persistence, and tradition. True

材料科学基础习题与答案

第二章思考题与例题 1. 离子键、共价键、分子键和金属键的特点，并解释金属键结合的固体材料的密度比离子键或共价键固体高的原因 2. 从结构、性能等方面描述晶体与非晶体的区别。 3. 何谓理想晶体何谓单晶、多晶、晶粒及亚晶为什么单晶体成各向异性而多晶体一般情况下不显示各向异性何谓空间点阵、晶体结构及晶胞晶胞有哪些重要的特征参数 4. 比较三种典型晶体结构的特征。（Al、α-Fe、Mg三种材料属何种晶体结构描述它们的晶体结构特征并比较它们塑性的好坏并解释。）何谓配位数何谓致密度金属中常见的三种晶体结构从原子排列紧密程度等方面比较有何异同 5. 固溶体和中间相的类型、特点和性能。何谓间隙固溶体它与间隙相、间隙化合物之间有何区别（以金属为基的）固溶体与中间相的主要差异（如结构、键性、性能）是什么 6. 已知Cu的原子直径为A，求Cu的晶格常数，并计算1mm3Cu的原子数。 7. 已知Al相对原子质量Ar（Al）=，原子半径γ=，求Al晶体的密度。 8 bcc铁的单位晶胞体积，在912℃时是；fcc铁在相同温度时其单位晶胞体积是。当铁由bcc转变为fcc时，其密度改变的百分比为多少 9. 何谓金属化合物常见金属化合物有几类影响它们形成和结构的主要因素是什么其性能如何

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