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选择题9.1 B,9.2图9-38A.9.3C.9.4D.9.5C.9.6 A.9.7D,9.8C,9.9B,9.1OA二.分析计算逊9.11 解;用估算法V=0.39V0.7V出于VBVUBE.发射.
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一.选界fl!7.1B.7.2D.7.3C.7.4C.7.5A.7.6B.7.7D.7.8B.7.9B.7.10B.7.11A.7.12B.二.计算设计7.13一台三相笼型异步电动机,接在频率为50H.
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第3章习题解答一.选择题3.1D3.2C3,3B3.4D3,5B3.6A-计算题3.7解:a)%(0.)=U:1(0.)=_小-呼2=_;有暂态现象发生。R2R2b) Mf(0,)=(7:0.)=0:.
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一、单项选界题6.1C6.2C6.3C6.4B6.5C6.6B6.7C6.8A计算JB6.9解:磴感应覆度为B上鼻5S2()10查铸制t化曲线得到机场强度为H0.7X10,A/m励偎电流为,Hl0.7.
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(第一章习题解)一.选择题1.1Dl.2B二,计算题1.7解:.P=u.P=UI.-.u=-Tpr=Jl100V=ovI=PlU=1/10=0.IA1.8解;=,0;5=3Ab)=%l=IA5=T=一.
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(笫2章习题解一.选择题2.1A2.2B2,3C2.4D2.5D2.6A2.7B二.计算题2.8 解;a) Kkltl=&内门=2.1。b) R,f,=(4/4+IO710y7=7/7=3/5Q2.9.
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(第5章习题解)一.逸鼻黑5.1C5.2A5.3A5.4A5.5A二、计算题5.6价;220=1,=Z55+j314O.3O35.7解:220A=2Z60A55j95.1P=3UlIltos=3802.
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(第4章习题解)选IMR41A4,2C4,3D4.4A4,54.6C4.7C4.8B计算题4.9斛l)l=10Z60oA,Z2=5Z-45oA相量图见解图4-1而示。/;+2=10cos6(F+j!0.
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l.good-looking-usedtodescribeHnVorwwhoisattractive用来描述任何长得好着的人(不论男女)pretty-usedtodescribe,RmOrMonMlw.
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Unit2TheOlympicGames.教学内容分析本单元的中心话题是奥运会,WarmingUp部分通过探讨让学生解占代和现代奥运会的异同.Pre-readinj!部分的:.个问应则进步考查学生对奥.
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Unit3Teenagersshouldbeallowedtochoosetheirownclothes.1. (should+)beallowedtodosth.(应当)允许做某事;Weshould.
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Unit11Whattinedoyougotoschl?TeachingalasTolearntoaskandsayclocktimeTolearntotalkabMitdailyroutines1 .
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Unit3Howdoyougettoschool?SectionB马文丽2014-3-26七年级下册Unit3Howdoyougettoschool?SectionB一、说教材1、教材的地位及作用本单.
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biologybiologistgravitysatellitegentlephysicist汇climatecrashspaceshippullfloatmass2认读词汇astronomer,bi.
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Unt9一、am超小题I分,共5分()1.Hnglishiusefultubjcct.NoneVhQUldSiVeitup.aB.anC.theD.不玳)2.IdontliketheTVwricM电视.
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Unit9InsuranceI.Translatethefollowingtcmsandexpressions6. afranchiseshop7. ship.inbulk8. riskofshort.
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本课是新目标英语七年级上册第八单元SeCtiOnA(Ia)部分.在上这节课前我将本课的教学内容制定为:1、学习1一12月份的单词:2、学习1-31的序数词,3、教授询问Whenisyourbirthd.
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一:切削线速度:V=11DN1000N=rpm(主轴转数)D=tmm(切削直径)V=Mmin11=3.14二:切削动力:KW=(KSXVXdXf)X6000A)W=KvV(切削动力)f=进刀(mm/r.
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Unit7TheArtofSmartGuessingBryanW.Mattimore1. Severalyearsago,interviewingcandidatesforajob,Igrewtire.
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Unit8lesson3MarcoPolo(2013-3-13)教学目标:ReadthetextandknowsomethingG8(2)Readandrecitenewwordsandphrases.