配送中心经营绩效管理子系统中，不包括下列哪个模块（） A.配送资源计划 B.运输资源

( )有“木雕之乡”的美誉。

A．曲阜
B．东阳
C．苏州
D．潮卅

一个样本共有3个小组，已知第一小组的频率为0.3，第二小组的频率0.5，第三小组的频数是10，那么这个样本共有（    ）个数据．

在图所示的四幅图中，正确标明了带正电的粒子所受洛伦兹力F方向的是 

1997年11月欧美亚非等国在巴黎召开的世界电子商务会议上提出的电子商务的概念是（）

A.电子商务就是建立网站

B.电子商务是指对整个贸易活动实现电子化

C.电子商务就是在Internet上从事的商务活动

D.电子商务就是在互联网开放的网络环境下，基于浏览器/服务器应用方式，实现消费者的网上购物、商户之间的网上交易、在线电子支付以及有关方的网络服务的一种新型的商业运营模式

It should go without saying that the focus of UML is modeling. However, what that means, exactly, can be an open-ended question. (71) is a means to capture ideas, relationships, decisions, and requirements in a well-defined notation that can be applied to many different domains. Modeling not only means different things to different people, but also it can use different pieces of UML depending on what you are trying to convey. In general, a UML model is made up of one or more (72) . A diagram graphically represents things, and the relationships between these things. These (73) can be representations of real-world objects, pure software constructs, or a description of the behavior of some other objects. It is common for an individual thing to show up on multiple diagrams; each diagram represents a particular interest, or view, of the thing being modeled. UML 2.0 divides diagrams into two categories: structural diagrams and behavioral diagrams. (74) are u sed to capture the physical organization of the things in your system, i.e., how one object relates to another. (75) focus on the behavior of elements in a system. For example, you can use behavioral diagrams to capture requirements, operations, and internal state changes for elements.

A. Activity diagrams B. Use-case diagrams
C. Structural diagrams D. Behavioral diagrams