通常用什么方法检验新方法是否存在系统误差?
参考答案:
用标准试样或标准物进行对照试验,或用国家标准分析方法、公认的经典分析方法进行对照试验,可检验新方法是否存在系统误差。
下面关于ERP的叙述,不正确的是()
A.ERP为组织提供了升级和简化其所用的信息技术的机会
B.购买使用一个商业化的ERP软件,转化成本高,失败的风险也很大
C.除了制造和财务,ERP系统可以支持人力资源、销售和配送
D.ERP的关键是事后监控企业的各项业务功能,使得诸如质量、有效性、客户满意度、工作成果等可控
Statuses are marvelous human inventions that enable us to get along with one another and to determine where we "fit" in society. As we go about our everyday lives, we mentally attempt to place people in terms of their statuses. For example, we must judge whether the person in the library is a reader or a librarian, whether the telephone caller is a friend or a salesman, whether the unfamiliar person on our property is a thief or a meter reader, and so on.
The statuses we assume often vary with the people we encounter and change throughout life. Most of us can, at very high speed, assume the statuses that various situations require. Much of social interaction consists of identifying and selecting among appropriate statuses and allowing other people to assume their statuses in relation to us. This means that we fit our actions to those of other people based on a constant mental process of appraisal and interpretation. Although some of us find the task more difficult than others, most of us perform it rather effortlessly.
A status has been compared to ready-made clothes. Within certain limits the buyer choose style and fabric. But an American is not free to choose the costume of a Chinese peasant or that of a Hindu prince. We must choose from among the clothing presented by fit, as well as by our pocketbook. Having made a choice from minor adjustments, we tend to be limited to what the stores choice among them is limited.
The word "appraisal" most probably means ().
A.involvement
B.appreciation
C.assessment
D.presentation