⚫ 完成本课题的学习后，能够用万用表测试晶闸管和单结晶体管的好坏。 ⚫ 掌握晶闸管工作原理。 ⚫ 分析单相半波整流电路的工作原理。 ⚫ 分析单结晶体管触发电路的工作原理。 ⚫ 掌握触发电路与主电路电压同步的基本概念

1-1 风与风力资源 1-2 风力发电设备 1-3 风力发电运行方式 1-4 风电场 1-5 风力发电现状与展望

Part I Vocabulary Structure(20%) Section a I. Ben was quite stubborn and it was almost impossible to him of his mistakes B. recognize C. forget D. convince

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

Part I Multiple Choice (15%) 1. He a good student A)am C)are B)is D)W

Part I Vocabulary& Structure(20%) Section A 1. IfI _you, I would not do it. A.was B.am C.were D. be

Part I Vocabulary Structure(20%) Section a You must get everything before you begin the experiment C preparing D. is prepared

Part I Vocabulary Structure(20%) Section a employee C. calculator D. device

1. The moniter is charge the class a. In.O b on of c at on d in . on

一、 Multiple Choice(15%) 1. The boss may Tony because he has the right qualifications. A)fire )dismiss B)hire D)blame