中国海军115舰的升级

氢钾钠为什么在元素周期表里在一族 为什么化学元素周期表中7、8、9列是一族? Some of the students in this class seem ______ to help those who have difficulties in their studieA.willing B.reluctant C.reliable D.responsible 168.The teacher asked some students in his class to ___who broke the window.A.find B.look for C.discover D.find out 如何求过剩空气系数a=1.1时,燃烧含氢气50%,甲烷50%的煤气所需理论空气量、实际空气量和排烟中二氧化碳浓 网子的单位MU.啥意思? 什么字代表奇迹的意思 大撒 英语翻译that happened a couple of years of years ago.这里的a couple of years 是不是指多年啊 而不是指两年? 英语翻译M.B.A.students may get by on their technical and quantitative skills the first couple of years out of school.But soon,leadership and communication skills come to the fore in distinguishing the managers whose careers really take off. 谁能帮我写一个英文文章MY SPRING FESTIVAL’S DAY反正就是我的春节的意思拉 They both like w_________ best because it often snows in France. 沏茶烧水用什么种壶好? -Did all the students in your class pass the exam?-Some of them did .( ) didn't.为什么用others不用the other?此句中有个限定范围,那就是这个班上,一部分人在教室里,而的另一类人则不在教室里,应该用the other啊? 朗诗德纯水机好吗?有什么缺点朗诗德纯水机好吗有什么缺点 是in cold winter nights还是on cold winter nights we like winter because we can make snowmen in winter同义句 1.They always get together to c( ) the Spring Festival .1.They always get together to c( ) the Spring Festival .2.We begin our new term in s( )情景交际.根据情景结合首字母提示,补全对话.How about that f( Ah,a secret .I'll give him a During the Spring Festival ,the Chinese people are always happy totreat the family ,friends and ...During the Spring Festival ,the Chinese people are always happy totreat the family ,friends and relatives ( ) avariety of foods .Awith B on C to D in 把always,get ,my ,on ,together ,a,family,holid把always,get ,my ,on ,together ,a,family,holiday连成句 In China,the Spring Festival is a family get-together.And so is Christmas in many western countries. 在特异性免疫中发挥作用的细胞主要是 为什么特异性免疫必须有抗体的作用?特异性免疫包括体液免疫和细胞免疫而细胞免疫的免疫物质不是淋巴因子吗. 什么样的净水机能产出水质要求电阻率大于10mΩ/cm的纯水来 They think the family getting together is important during a festival.get为什么要用getting请分析一下句子结构··get在这里的词性呢··这个句子有三个动词·think /get/ is 一般的飞机飞一分钟要多少油? 请教化学问题,Ca(clo)2与K2FeO4净水原理和Cl2一样吗?都是因为强氧化性吗,还是其他原因．．．还有SO2呢～～～～ 用K2FeO4代替氯气处理饮用水,有杀菌消毒作用且不会形成致癌物但无净水作用,这一说法对吗? 微积分在现实生活中是怎样应用的请问微积分在现实中的具体应用,希望有举例说明,5分送出. SD敢达中所有机体能变形的都有什么机体? 微积分是什么?对我们实际生活有什么益处?我前几天看了一下微积分,看到极限就看不下去了,那个lg又是什么? 微积分在生活中的应用不要推导物理等学科定理时的应用,是生活中的应用,最好能有创新的余地