点击切换搜索课件文库搜索结果(612)
文档格式:PPS 文档大小:512KB 文档页数:9
同步发电机在转速保持恒定、负载功率因数不 变的条件下,有三个主要变量:定子端电压U 负载电流、励磁电流。三个量之中保持 一个量为常数,求其它两个量之间的函数关系就是 同步发电机的运行特性
文档格式:PPS 文档大小:1.11MB 文档页数:14
第十九章同步电动机和同步调相机 教学要求: 1.了解同步电动机的优缺点 2.熟悉同步补偿机的用途
文档格式:PPS 文档大小:3.66MB 文档页数:29
1 电机的作用与国民经济、生活密不可分 2 电机发展历程及当前状况 3 电机学的学习目的、主要内容及学习方法
文档格式:DOC 文档大小:57.5KB 文档页数:7
1 Make the best choice: 1.She was able to cope ---- the difficulties she met with. a. in b. with. of.to
文档格式:DOC 文档大小:89KB 文档页数:8
Part I Vocabulary and Structure (points) Directions: This part is to test your ability to use words and phrases correctly to construct meaningful and grammatically correct sentences. It consists of 2 sections Section A(20X 1)
文档格式:DOC 文档大小:82KB 文档页数:8
Part I Multiple choice(20%) 1. The student was just about to the question when suddenly he found the answer A. give up C. arrived at D. submit to
文档格式:DOC 文档大小:145.29KB 文档页数:7
Part I vocabulary and structure: 30% A: make the best choice 1. she was able to cope the difficulties she met with A in B with C. of d. to 2. Would you mind the radio? A not turn on B. not to turn on C. not turning on D. not turned on The lion is a of courage bol B sign C. mark D anima
文档格式:DOC 文档大小:66KB 文档页数:5
Part I Vocabulary Structure(20%) Section a You must get everything before you begin the experiment C preparing D. is prepared
文档格式:DOC 文档大小:115.5KB 文档页数:4
Part I Vocabulary& Structure(20%) Section A 1. IfI _you, I would not do it. A.was B.am C.were D. be
文档格式:DOC 文档大小:61.5KB 文档页数:5
Part I Multiple Choice (15%) 1. He a good student A)am C)are B)is D)W
首页上页4950515253545556下页末页
热门关键字
搜索一下,找到相关课件或文库资源 612 个  
©2008-现在 cucdc.com 高等教育资讯网 版权所有