表达喜欢的两个字的词

碳酸根与碳酸氢根溶液中同时有碳酸根和碳酸氢根,引入氢离子,则氢离子与谁先反应需要原理和依据,不懂勿进. ·[he put up some signs_(ask)someone for help]有助于回答者给出准确的答案为什么? He put up some signs asking for help分析此句子的成分：asking for help 是现在分词短语作后置定语吗?另外在不考虑句子译文的情况下可不可以把asking 改成 to ask 解释为不定式短语作目地状语. He also put up some signs asking for old bikes.为什么用asking ,用to ask 可 江西省吉安市遂川县的堆子前分多少个村、分别是哪些村、 二战以后发生的全球性经济危机,年份,大概事件 如何使用体温计? A man went to see a doctor.“Open your mouth,” the doctor said.Then the man opened his mouth and“ Doctor,you don’t understand,” the man said,“ I ……”“ I don’t want to hear any excuses,” The doctor said,“ You must find time for 为什么是he puts up signs asking for help.那么to ask for 我知道ASKING是伴随状语， 碳酸氢根,碳酸根的区别? A student once said how useless it was to put advertisements in the newspaper a man once said how useless it was to put advertisements in the newspapers一个男人说在报纸上贴广告是多么无用,是这么翻译吗?谁能帮我分析一下句子成分谢谢 污水对我们的危害（至少5条）急用! a student once said how useless it was to put advertisements in the newspapers.为什么不用uselessly 污水对环境有哪些危害? 短文翻译 A man once said how useless it was to put advertisements in the newspapers.“Last week,” ?χ?向有铝粉与过氧化钠组成的混合物中加入足量水,当反应停止后,溶液澄清,共收集到气体3.5g,相所...?χ?向有铝粉与过氧化钠组成的混合物中加入足量水,当反应停止后,溶液澄清,共收集到气体 Espresson with whipped cream 如题 moisturising cream with plant extracts是什么?早上用还是晚上用? placenta cream with vitamin e pacenta cream(with vitamin e)盖子是肉色的,英文字旁是一只绵羊,我一澳大利亚朋友带来的.是脸上手上都能用吗?但我用了后皮肤还是干干的,脸上有白色干皮,什么原因? optimus怎么读 向铝粉和过氧化钠的混合物中加入足量水振荡,当混合物全部溶解后,得到无色透明溶液,并放出7g气体.向该溶液中滴加5mol/L的Hcl,有白色胶状沉淀生成当加到280ml时沉淀恰好溶解.求原混合物中铝 Why not _____(ask) the policeman for help?用适当形式 We should___(ask) the policeman for help?要变形吗?如要变成什么?再解释一下为什么.谢谢. I said when he was a little older he could make that decision .with the hope that that fad would haI said when he was a little older he could make that decision .with the hope that that fad would have pass out of style.请帮我分析一下后半 【老友记308】【图】that would make that work...make sth work My brother and I made a bargain that I would wash the dishes if he would dry them.这里if是什么用法?应该是可以用and来代替的吧? He was sure the doctor would give him ________ that would make him feel better.A.a shoot B.a shot C.an inject D.a reject 完全燃烧62克磷需要多少克氧气 将1.05克铝和过氧化钠的混合物放入一定量的水中,充分反应后固体无剩余.再向其中加入50ml 1mol/L的盐酸,可恰好使反应过程中产生的沉淀消失.求原混合物中铝,过氧化钠各多少克? 过氧化钠与水反应生成氢氧化钠和氢气.将过氧化钠和铝粉混合物放入水中,反映完毕后得到澄清溶液,并产生8