1、什么是有限元法?简述有限元法的基本思想。 2、如图1所示,受自重作用的等截面直杆的长度为L,截面积为A,弹性模量为E,单位长度的重量为q。将受自重作用的等截面直杆划分成3个等长的单元,将第i单元上作用的分布力作为集中载荷qL,到第1结点上,试按有限元法的思路求解

第1节概述 第2节影响交通方式划分的因素 第3节交通方式划分过程 第4节交通方式划分模型

Teaching Points l. Background knowledge ll. Introduction to the passage lll .Text Analysis IV. Rhetorical devices V. Questions

Teaching Points l. Background knowledge ll. Introduction to the passage lll . Text Analysis IV. Rhetorical devices V. Questions

Teaching Points l. Background knowledge ll. Introduction to the passage lll . Text Analysis IV. Rhetorical devices V. Questions

Teaching Points l. Background knowledge lI. Introduction to the passage lIl. Text Analysis ⅣV. Rhetorica| devices V. Questions

Teaching Points l. Background knowledge ll. Introduction to the passage lllText Analysis IV. Rhetorical devices V. Questions

第一节 工农民主政权的法律制度 第二节 抗日民主政权的法律制度 第三节 解放区民主政权的法律制度

一、平面点集:平面点集的表示:E={(xy)l(x,y)满足的条件}余集E 1.常见平面点集:

How to Improve Your Spoken English literature: instrumental and integrative motivation. Instrumental motivation is one in which the learner desires to use the language as a tool to achieve some desirable ends. In contrast, an integrative motivation is one in which \learners may choose to learn a particular L2 because they are interested in the people and culture represented by the target-language group\(Ellis, 1997, p75). In various contexts, both motivations have proved important. Of course, students can have both types of motivation at the same time