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谁能告诉我做拉面最精细的过程? 许多家用的电器的开光旁都有指示灯,是利用发光二极管来显示电源的通断.指示灯与用电器的工作电路是串联还是并联的 我想用发光二极管做个电源指示灯,比如电压是220V和12V应该加多大的电阻,该怎么计算? 举一些因自然或人为灾害使建筑毁坏的实例,比如汶川地震,最好国内外都有!如果有因过于注重外观而使建筑不够稳定的例子最好! hxd1与hxd3型电力机车在主电路上主要有何区别 电力机车牵引变流器常用的整流电路类型我知道有单相桥式整流电路,还有哪些?那单相半波和单相全波还有地铁的直流斩波电路算不算呢?还有单相不可控电路不是不可控吗怎么应用在机车上 泰兴 爱森絮凝剂有限公司 怎么样 爱森絮凝剂爱森絮凝剂有限公司联系方式请用过爱森的朋友回答,不要复制东西, 爱森絮凝剂怎么样 请问爱森絮凝剂客服是多少? 我是泰兴人.为什么泰兴人就让人看不起? 汶川地震受灾人员的安置 what does he ____ the food?A.think ofB.thinks ofC.thinks about选什么要说清理由 生物的性别决定受环境因素影响吗?举出事例举出事例举出事例举出事例 如何进行环境因素调查,请举例如果对一个学校进行环境因素调查,要考虑那些方面,如何能做到全面? 交流稳压电源电路设计 要求利用双向晶闸管设计0~220V连续可调的交流稳压电路,需进行过流过压保护.求电路图和所需元件, 求220V稳压电源制作家庭用电.我加的电压到晚上才150-160V 想买个稳压电源太贵想自己做个 输入220 输出220的 英语填词：Miss Green was very heavy .Sheweigheds 100kg,and she was[ ]heavier every month,so she[ ]tsee the doctor.2段 The doctor said "You[ ]tobe on diet【节食】,Miss Green ".He gave her a small book and said,"[ ]itcarefully and eat the thi 1.( )Julia_____lunch at home.A.eat B.has C.have D.do2.( )They like chicken _____dinner.A.on B.and C.for D.of3.( )_____beth like bananas?Yes._____.A.Do;she do B.Do;I do C.Does;she dose D.Does;she doesn't4.Do you have ____lunch at school?A.a B.an C.the 同义句 Most werkers have lunch at the factory （ 四个英文单词 ）have lunch at the factoy. 0.5M KOH甲醇溶液, Do you want to live another 100 years or more?Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the human life span. you want to live another 100 years or求选择题答案　　Do you want to live another 100 years or more Some experts say that scientific advances will one day enable humans to last tens of years beyond what is now seen as the natural limit of the 帮忙翻译一下这篇阅读文章,Miss Gogers taught physics in aNew York school.Last month she explai Miss Li no longer taught us this term.(改为同义句)Miss Li ______ ______ us______ ______ . 英语so senously__in the strong earthquake that it has to be rebuilt.a.the school is damagedb.is the school damagedc.the school has damagedd.has the school damaged What does the girl put on? what ( ) the girl put on?what ( ) the girl put on? the earthquake which happened in yushu ____14th april 2010 was a big disaster 1.at 2.on 3.in 4.to 用一张长20cm宽15cm的长方形铁皮做个高5cm的长方体无盖铁皮盒,铁皮盒的容积最大是几? 氢氧化锂的溶解性咋样,有氢氧化锂参加的化学反应书离子方程式时拆还是不拆,在他的酸性溶液中加入碳酸钠有无沉淀生成 亚硫酸钠在离子方程式中可以拆开吗