贫的组词是什么

交流接触器作用 明胶对人体有何危害? 果胶和明胶对人体有害吗 吉利丁片和鱼胶粉对人有没有害?哪个更好用 求 交流接触器 和按钮开关的 线路图 ∠AOB=115°,∠AOC=∠BOD=90°,则∠COD=（）?115和45应该是错的， AOB=COD=90°,AOC-BOD=120°,BOD=?AOC是 明胶是什么 哪些食物可能会添加明胶 明胶是什么东西?是一种植物还是合成物还是～是从什么动物的结蒂或表皮组织中提取出来的? 测溶解氧用的硫代硫酸钠浓度大概是多少?做溶解氧实验的时候加淀粉后怎么不变蓝? 我在测定BOD时,开始固定溶解氧后,加入淀粉后不显蓝色,用硫代硫酸钠标准溶液滴定也无变化,这是为什么?是不是水样中没有溶解氧呢? BOD5的测定中培养前后的溶解氧几乎都一样是怎么回事? 我有一个CJX2-18交流接触器,一个TDW-2001温控仪,一组加热管,可以给我设计一个电路吗?条件：220V交流供电,主要是把电路的接线位置写清楚. 学电的大哥些帮哈忙 请帮我绘制一个开关、一个接触器控制电动机的一次及二次控制电路原理图 ＿her home,Mary helps her mother do some housework.A.As soon as she returns B.On arri...＿her home,Mary helps her mother do some housework.A.As soon as she returns B.On arriving C.After she gets D.Directly she reaches请问选哪个? She got up to get some sleeping pills but found there was ____left at homeA nothing B none C something D nobody 请说明原因 when she was alone at home,Mary needed a friend____1.playing with2.to play withwhy? 水污染实验要注意哪些细节才能保证数据的准确性,比如COD、BOD、氨氮、溶解氧等等. She does some cooking at home.(对does some cooking 提问） （ ）does she ( ) at home?I am free this Sunday afternoon.(同义句）I （ ） free （ ） this Sunday afternoon. 为什么可以用COD、BOD来表征水体污染的情况? 26.when she was alone at home,Mary needed a friend___ A playing with B .with whom to play26.when she was alone at home,Mary needed a friend___A playing with B .with whom to play貌似两个都可以啊,前者是现在分词做目的状语,后者也 英语翻译Modern distribution systemsThe modern distribution system begins as the primary circuit leaves the sub-station and ends as the secondary service enters the customer's meter socket.A variety of methods,materials,and equipment are used amon 英语翻译Abstract.The present study considers the relationship between college mothers’ academic achievement goals (both learning and performance) and the mothers’ attitudes toward their children’s schoolwork as well as the relationship betw 英语翻译当今社会已经步入信息时代,在各种信息技术中,信息的传输及通信起着支撑作用,人们对通信的要求也越来越高.如何建立更稳定更高效的调制方式是我们需要不断研究和改进的,也是 after/in/on/at cold winter night 哪个对? 是in a cold winter 还是on a cold winter?（）None of you will go to play basketball_____a cold winter,_____?A in,will none B on,won't you C in,will you D on,will you谢谢大家了,我弄不太清楚,见谅~~ （ ）a cold winter in还是on同上 初中物理知识-电池的串联电流会增加吗 找一篇有关岩土或者建筑方面的外文翻译,要有原文和翻译~ 我家的玻璃茶几最近脱胶了,请问用什么胶粘在一起我家的玻璃茶几最近脱胶了.面板是块钢化玻璃.有四条钢管支撑的那种.钢管和玻璃之间有四块圆形的铝合金片(铝合金片有圆圈一个个的花 含有5个院子的烷烃,催化裂化可生成的烯烃最多有五种是那五种? 如图,电流都经过哪呢?是这三条路都走吗?我们班有的同学说哪边电阻少电流就走哪边,所以就只走R1,谁能帮我解释一下电流的真正含义和它正确的走向?以后遇到电路图该怎么判断它走哪呢?