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讨论函数在x=0处的连续性和可导性 由于胶体粒子一般带有电荷,因此在胶体中加入电解质,常因中和了电性而使胶提发生聚沉,现在氢氧化铁胶体中滴入一种液体,初滴入时氢氧化铁胶体发生凝聚而沉淀,继续滴入,沉淀消失.则这种 avi 这几个字母表示什么意思他为什么会把这几个字母放在网名的最后面 硫酸 铜 (10 17:38:59)将50ml18mol/L的H2SO4中加入足量的CU片并加热才,被还原的H2SO4的物质的量是?A等于0.9mol           B大于0.45mol 小于0.9mol     & 天色渐亮,不同的鸟先后鸣叫.(改为拟人句)还有：1.也是。（造句）2.雨下得太大，运动会不得不延期举行。（改为肯定句，句意不变） 天生丽质造句 叙事日记给一篇 一个长方形的长a=根号15cm,宽b=根号3cm,则这个长方形的面积是________.如题 NASA在太阳边发现的巨大飞船是怎么回事?NASA又作出了什么举动呢?为了不让群众恐慌，有必要。 用语文写一篇日记的要素有哪些? NASA拍到太阳附近超级飞船的传言真实性有多大?传NASA拍到太阳附近超级飞船 引全球网友热议 语文日记怎么写啊,在线等啊! 请问!我要写日记：我的语文精选：要怎么写? 获得mRNA-cDNA复合体和cDNA的过程都是酶促反应,此过程为什么会形成冈崎片段呢?过程中要用到DNA连接酶 我想找一篇非常短的2年级的语文日记 做Northern Blot时合成CDNA探针时用总RNA还是mRNA?还是两者都行啊? 1in 100 years 和after 100 years的区别 两个都是一百年之后有什么区别2还有there will be 和there will have 的区别3 ————will Kate arrive here?空格是How soon还是How long （英语单选）After about thirty years of noAfter about thirty years of no direct flights,_____ US passenger plane left San Francisco,California on Thursday for _____ Ho Chi Minh City,Viet Nam.A.a;不填 B.the;不填 C.a;the D.the;the说一下这 After almost thirty years lf no direct flights,___US passenger plane on Thursday left San Francisco,California for ____Ho Chi Minh City,Viet Nam,formerly known as Saigon.A a;×B the;×C a;the D the;the in ten years和after ten years 有什么区别, 2、4、5、5怎么组成24点 各个民族不同的过年习俗 一篇关于秋景的作文.不要摘抄别人的,我要自己写的（从细节着手,至少300字） 几个英语对话`急~1.You are going to go abroad and you come to ask your tutor about your preparations.2.You think football is more interesting than tennis,but your friend doesn’t agree.He/She thinks tennis is more interesting than football.mak 求编英语对话.两人一组,3分钟之内.帮我编好的话加50!Situation 1 In a birthday party A and B are meeting for the first time intheir friend’s birthday party. They make some self-introductions and begin totalk about their hob A; Excuse me.( ) the zoo,please?B; Oh,it's not ( ).It's near here.A:( )can I ( ) there?B:Let me ( ).You can ( ) there ( )bus.A:( ) bus can I take?B:You can ( ) a No.11 bus.A.Thank ( ).B:You're ( ). 已知a.b.c.d为整数,且|a-b|19的平方+|c-a|95的平方=1,求|a-b|+|b-c|+|c-a|的值? TO BE OR NOT TO BE IT'S A QUESTIONhttp://hi.baidu.com/5%D5%E6%B2%BB%B6%AE/album/%C4%AC%C8%CF%CF%E0%B2%E1/be8f3a0185de990e7aec2c2c.html请大家看了网页再回答我详细写在那里了 TO BE OR NOT TO BE IT'S A QUESTION 是什么意识TO BE OR NOT TO BE IT'S A QUESTION 这一句有什么意义? To be or not to be,it is a question.单词的意思都懂,但是合起来就不明白了.最近看到好多人签名里都写这个...想弄清楚.. 12345加6789! 12345加6789!你懂