stop现在分词

检测铬时不赶酸可以么?为什么 We went to Guangzhou by plane last month.改为同义句 无水硝酸铬溶于水吗? Last month I went to New York.After I __1____ out of the station,I met a friend of ___2__ who works in a university(大学) in the town.Of course,we were very __3____.“What has happened to you,Eric?” I couldn’t help ____4__ out when I found tha 配位建形成的条件是什么?柠檬酸和三价铬离子能否形成配位建? we went to （the great wall）last month对括号里提问 Mr.Smith went tothe USA by plane last week（改为同义句） We went to Guangzhou by piane last month,改为同义句 【高分】【逐步增加】棉花纺成棉纱,棉纱纺成布的工艺流程工艺流程里面还要包括使用到什么纺织机械普梭精梭什么等级的花可以纺织成什么样的布 今年棉花什么价格 把塑料饭盒放在蒸锅里,高温蒸煮食物,是否会有有毒物质散出~ We had a five-days trip last year,这句话有一处错误,是什么? You went on a three-day school trip during the last vacationzuowen Gogo went on a trip last They went on a trip last month.和They went to a trip last month.的意思有没有语法错的,哪个比较对 we went on a trip to shanghai by bus last week的同义句 写出属于苯的同系物的所有同分异构体 工业制硝酸中为了制取更高浓度的硝酸,为什么可将稀硝酸与硝酸镁混合后蒸馏浓缩 HCl与AgNO3制取HNO3的原理谁知道这里制取硝酸的原理? 工业上制取98%的hno3,n2o4与稀硝酸混合通氧气.假设n2o4有a克20%的硝酸b克.转化率100%求a/b保留两位小数. 从棉花到棉纱线需要经过那些加工步骤?有详细点的最好 帮我找不同种类诗句找寄情山水、美好品质、悲愤之情、喜悦之情的诗句.并解释喜悦之情的诗句 不同种类的诗 请告诉我三价铬和六价铬的毒性及废水处理..THANKSA We went to Sanya by plane last month（就划线部分提问）对by plane提问 We went to the beach on vacation last month.（对划线部分提问）划线部分是the beach______ ______you______ on vacation last month? Is this factory____ you went to last month ?Athat Bwhich Cwho Dthe one能分析为什么选D而不选其它选项?that,which,where,分别用于什么句中呢?如果能细讲这类句型怎样判断就更好了O(∩_∩)O( 制版厂污水处理中的六价铬对人有害吗 He went to Japan last month翻译 棉纱和棉花有什么区别 纺织厂废旧棉纱布能不能再次回纺做成棉花、坯布或者棉线 北京化工大学:配眼镜在哪个店最合适?