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一座桥长840m.行车速度100km/h.汽车通过桥的最短时间是 用G418筛选六七天细胞就死完了?最近在做G418筛选最佳浓度,做了三次,每次都是进行到第六天的时候细胞就死的差不多了.用的是293细胞,文献中差不多是800μg/ml,我做的从300到800的梯度,现在300μg/ 请教有关G418筛选的问题 惠州市惠东县黄埠镇到广东省东莞市常平镇怎么走?急用 、 知道得谢谢了.. 谁能帮我找一个李白的英文翻译?除庞德以外的另外版本, 弟子规的表演形式,要全班参与的 不褒不贬的成语一定要10个以上! 其字开头的成语形容老师.褒意 长干行的原文和译文 长干行崔二首之一翻译 世界上最大的淡水湖泊是哪个湖泊?大神们帮帮忙就是 秦始皇和汉武帝在军事行动、役使百姓、加强思想控制方面有哪些类似之处 骗中骗 THE STING怎么样 What is the secret to a long marriage? THEY HAVE THEIR REASONS FOR KEEPING THEIR MARRIAGE _SECRET FOR __MOMENT.A:A/ B:THE A C:/THE D:A,THE 英语翻译Tori Amos - Sweet the StingWith a strut into the roomWith his hat cocked sure defiantlyHe said "I,I have heardThat you can play the way I like it to be played."I said,"I can play,anyway that you want.But first I want,I want to knowBaby is 英语完型I live in Watts in South Central L.A and I'm fat.英语周报高二北师大版 北京专版 2010-2011第十九期 To be the striver and the happy.求翻译 Hold and hold to charge the slider release to shove it forward翻译成中文? 1875年的法国和1871年德意志帝国的政体类型是什么? ( )扬( )发 要成语 成语：（）（）（）扬在括号里填上合适的字,组成成语 一个褒一个贬的成语々々々々最少4组 ?々々々 ?々急求!要4组 After the accident,John feels his career as_ athlete is coming to _ end.A\;the Bthe;an Can;an Dan\不是说头衔前不加冠词么职业与头衔有什么区别头衔与职业有什么区别 44. Jack didn't study law._________, he decided to become an actor.A. Instead of B. Instead C. In place of D. Without --- his career as an actor he never give up his hope of becoming a hollywood star选项 throughout within for in 干锅鸡拼音 为人接风的筵席叫洗尘,为人送行 办的筵席叫什么 是送行饺子接风面还是接风饺子送行面 Tina met a famous actor怎样转换成特殊疑问句 Marry married that famous actor(改为一般疑问句)1、Marry married that famous actor.(改为一般疑问句)2、He joined a computer company last year.（改为否定句） Tina met a famous actor否定回答如题.