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一台7.5KW三相电机,其余为单相电器约10KW,请问需要配多大的三相电表和进户线（120m).需要核算公式 fish是可数名词还是不可数名词 用手将一重物为五牛的物体全部压入水中,物体排开的水重为八牛,实时物体受到的浮力为多少牛 英语中关于fish是可数还是不可数名词的问题,如下那有一些鱼翻译成英文是There are some fishes还是There is some fish 为什么把重为5牛,体积为600立方厘米的物体投入水中,浮力为五牛而不是六牛? 谁抽过电子烟 He began to learn English last year 同义句 He ____ ______ English for a year The girl began to study English the year before last.（同义句）--- --- about --- --- since the girl began to study English. He began learning English____last year.A since B from C by D for应该选那一个.我认为选A , mary began to learn the english language 和mary began to learn english 都可以把? 微观经济学 The supply of oil will never actually run out.Why?The supply of oil will never actually run out.Why?从微观经济学的角度回答 The drivers of supply chain management怎么翻译? supply the basic information of a company.翻译 求帮忙翻译哇,An Analysis of the Load Characteristic of the Purified Regylated Power Supply这是一个题目,翻译工具翻得都很奇怪 发生雷电时,为什么总是先看到闪电再听到雷声 发生雷电时,为什么总是先看到闪电后听见雷声? We have confirm the capacity have 后可以加动词原型? 339.We have now decided to supply you with all the parts as itemized in your order and going to apply to the government agencies concern for export licenses.itemized作为开列,修饰什么all the parts as itemized in your order是不是订单里开 如果有时间的话请问We will quantity the supply and demand for a industry or company in term of linear function involving variable for quantity and 过量的酒精会抑制人的消化系统还是神经系统? 为什么先看到闪电后.才听到雷声 苏武的故事 关于苏武的故事 苏武的故事有哪些 苏武的事迹 苏武的简单事迹 为什么先看到闪电,后听到打雷声呢打雷了,下雨了,可是 ,我们却先看到闪电,然后才听到打雷声,这是怎么回事呢 为什么先看到闪电后听到雷声 马的很短很短的故事最好在150字左右,特急! 地球上最初的生命诞生在什么地方? 马的故事(短小!)要短小的哦! 地球的起源究竟在哪里、