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下水管道横管到夏天出水珠怎么办?我家卫生间是有4个蹲位,排水在楼下别人家,楼下是一根横管,一到夏天用水多一点就从排水管上出现水珠（冷凝水）,应该怎么办?说闲话的请不要在我这里发 空调外机和室内机之间的管子上有水珠是怎么回事是那根缠白色胶带的管子,现在又加了一层胶带,但是还是有水珠,是怎么回事. Two______died of could last year．A．hundreds old people B.hundreds of peoplesC．hundred old peoples D.hund red old people It was really cold last winter.Really?I was in Sanya then.You know Sanya is____the south of China.A.in B.on C.at D.to 为什么选A,能说一下这个题考的有关知识吗? 化学中写离子方程式时,浓H2SO4,稀H2SO4,浓HNO3,稀HNO3,HCl,哪些拆,哪些不拆?原因 举几个例子 化学中写离子方程式时,浓的和稀的H2SO4,HNO3,HCl,哪些拆,哪些不拆?请说全面 家用电器的指示灯是荧光二极管吗 插排里边的电阻和二极管指示灯是属于串联还是并联呢,我拆开看了看不出来插排里的电阻和二极管指示灯一般是多大的啊, 不管串联还是并联总电功率都等于个用电器电功率之和吗? 梅雨季节是什么意思 蛋白质能被蛋白酶水解成氨基酸吗? 蛋白质在蛋白酶的作用下可水解生成多种氨基酸 蛋白酶能将蛋白质水解成氨基酸吗? 什么化学试验中用到水 屋顶涂料与屋顶瓦涂料的有什么区别? _What_ some people regard as adrawback is seen as a plus by many others.为什么填What 请翻译这句话~ 如何反驳上街买菜不用函数? 翻译一句英语：One of my favorite stories of change come from a girl. 英语翻译On November 28,2011,we shipped this approved or re-affirmed case to the Department of State for visa processing.For more information,please contact them directly. Because of carelessness , he fell off the bike ____ .A.while he rode B. while riding C. while he is riding D. while on his bike 为什么选B,如何分析此题,请详解,谢谢. The roof of the house needs repairing.It's raining now,you'd better get something to _____rain drops.A control B catch C carry on the roof of the house可以直接用roof吗?有什么区别? we___the house not because of its style,but because of economic considerationsA.set offB.gave upC.put awayD.settle down选择哪个 翻译和说明下理由 But last year Jim lost the house because he was ___(短缺的) of money. In other ----------of the world,things are different.In other ----------(part）of the world,things are different. Things are ________________ in other parts of the world.(difference) come to 翻译 翻译prepare for the day to never come.语法有错误吗?对的话汉语意思是什么? 在乙酸乙烯酯进行自由基聚合时,加入少量的苯乙烯会出现什么现象?用反应式说明原因. 如何理解意识的本质和意识的能动性以及物质和意识的辩证关系 意识的能动性中的能动该如何理解? 1L硫酸钾和硫酸铜的混合溶液,硫酸根是2MOL/L,电解此溶液,两极均收集到22.4L气体求原溶液钾离子的浓度