搜题请搜索小程序“爱下问搜题”
问题 单项选择题

计量技术按照使用需要可以分为（）。

A.标准测量技术、工业测量技术和管理测量技术

B.标准测量技术、工业测量技术和计量测量技术

C.标准测量技术、商业测量技术和计量测量技术

D.标准测量技术、工业测量技术和农业测量技术

答案

参考答案：B

解析：企业的计量工作包括计量技术和计量管理两个部分的内容。其中，计量技术是指计量标准的建立到量值的传递以及生产过程中的实际测量。计量技术按使用需要可分为：①标准测量技术；②工业测量技术；③计量测量技术。

选择题

在一定温度下，向容积固定不变的密闭容器中充入a mol PCl5，发生如下反应：

PCl5（g） PCl3（g）+Cl2（g）；达平衡后再向容器中充入amol PCl5，再次达到平衡后，与原平衡比较，下列叙述不正确的是 （   ）

A．混合气体的密度增大

B．相对平均分子质量增大

C．PCl5的转化率提高

D．PCl5的质量分数增大
查看答案
问答题

A couple of years ago a group of management scholars from Yale and the University of Pittsburgh tried to discover if there was a link between a company’s success and the personality of its boss. (46)To work out what that personality was, they asked senior managers to score their bosses for such traits as an ability to communicate an exciting vision of the future or to stand as a good model for others to follow. When the data were analyzed, the researchers found no evidence of a connection between how well a firm was doing and what its boss was like. As far as they could tell, a company could not be judged by its chief executive any better than a book could be judged by its cover.
(47)A few years before this, however, a team of psychologists from Tufts University, led by Nalini Ambady, discovered that when people watched two-second-long film-clips of professors lecturing, they were pretty good at determining how able a teacher each professor actually was.
Now, Dr Ambady and her colleague, Nicholas Rule, have taken things a step further. (48)They have shown that even a still photograph can convey a lot of information about competence—and that it can do so in a way which suggests the assessments of all those senior managers were nonsense.
Dr Ambady and Mr. Rule showed 100 undergraduates the faces of the chief executives of the top 25 and the bottom 25 companies in the Fortune 1,000 list. Half the students were asked how good they thought the person they were looking at would be at leading a company and half were asked to rate five personality traits on the basis of the photograph. (49) These traits were competence, dominance, likability, facial maturity (in other words, did the individual have an adult-looking face or a baby-face) and trustworthiness.
And Dr Ambady and Mr. Rule were surprised by just how accurate the students’ observations were. The results of their study, which are about to be published in Psychological Science, show that both the students’ assessments of the leadership potential of the bosses and their ratings for the traits of competence, dominance and facial maturity were significantly related to a company’s profits.
(50)Sadly, the characteristics of likability and trustworthiness appear to have no link to company profits, suggesting that when it comes to business success, being warm and fuzzy does not matter much (though these traits are not harmful).
查看答案