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问题 填空题

字符串分为两大类，一类是字符串常量，使用String类的对象表示；另一类是字符串变量，使用【 】类的对象表示。

答案

参考答案：StringBuffer

解析：在Java中String类只支持只读字符串，适用于字符串常量；StringBuffer类支持可修改字符串，适用于字符串变量。

单项选择题 案例分析题

Creating the Logistics Vision Nowadays,most companies are familiar with the idea of "mission statement"as an expression of setting a vision for the business.The mission statement seeks to define the pur-pose of the business,its boundaries and its aspirations.It is now common for organizations to have such statement for the business as a whole and for key constituent components.What some companies have found is that there can be significant benefits to defining the lo-gistics vision of the firm. The purpose of the logistics vision statement is to give a clear indication which business intends to build a position of advantage through closer customer relationship.Such state-ment is never easy to construct.There is always the danger that they will publish the ener-getic and encouraging declaration that give everyone a warm feeling but provide no guideline for action. Ideally the logistics vision should be built around the simple issue of"How do we intend to use logistics and supply chain management to create value for our customers?"To realize this idea will necessitate a detailed understanding of how customer value is created and deliv-ered in the market in which the business competes.Value chain analysis will be a fundamen-tal element in this investigation as will the definition of the core competencies and capabilities of the organization.Asking the question"What activities dowe excel in?"and"What is it that differentiates us from our competitors?"is the starting point for creating the logistics vision statement. Earlier,it was suggested that the three words"Better,Faster,Cheaper"summarizes the ways in which logistics vision statement can provide value for customers.The criterion for good logistics vision statement is that it should provide the road map for how these three goals are to be achieved． Questions:

What should a logistics mission statement provide？（）

A.Management encouragement.

B.A design of new methods to apply to customer satisfaction.

C.Some detailed actions to undertake to obtain more market share.

D.An outline of actions for goals to be achieved．
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单项选择题 A1/A2型题

以下几种说法不正确的是（）。

A.上运动神经元病变可出现剪刀步态

B.下运动神经元病变产生肌萎缩

C.小脑病变可出现起坐试验（+）

D.锥体外系病变可产生扭转痉挛

E.肌肉疾病中先天性肌强直没有肌肉肥大
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