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如何防止与空压机相连的加热箱中的气体回流到空压机中?本小弟现在设计一套气动系统,是先用空压机将空气压缩以提供高压空气,然后再将高压空气通到加热箱中进行加热,加热之后的气体通 1.简述红宝石、蓝宝石的光学性质、力学性质和特征包裹体特征. 陈奕迅英文名是Eason Chan ,我叫张伊豪,英文名字是什么呢? 陈奕迅英文名是Eason Chan ,我叫文春杰,英文名字是什么呢? 陈奕迅英文名是Eason Chan,我叫杨荐平,那位大师能帮我起个好的英文名字? 蓝宝石A晶向、R晶向、M晶向、C晶向分别是什么意思? it is good that的意思 An error occurred while attempting to initialize the Borland Database Engine (error $2108 服务器启动异常!Code:0 An error occurred while attempting to initialize the Borland Database Engine想在家搞个传奇自己玩出现这个问题 an error occurred while initializing SQL sever compact:access to the database file is not allowed.我的笔记本每次开机都有这个,但是也不影响使用. 三国里的刘禅的禅字读什么音 the bike needs repairing thr bike needs _____ _____ ______. an error occurred while trying to connect to the realserver 使用ANSYS时出现an error occurred while attempting to open the results file怎么办呀 that is not the way ____i do it/为什么that is not the way （with which）i do it不对? 刘禅的禅是读“shan”（四声）还是“chan”（二声）? 请问刘禅的禅是叫shan还是叫chan How dirty the water is! Yes, we must do something to stop the water______应该是填pollute的正确形式 麻烦各位帮帮忙。在此谢过各位。。。 we should do something to stop the children from _____ 我们应该做些事来阻止孩子们退学 he is not so good at this,but has done better than before We should do something to stop the forest_______being cut down.A.from B.in C.by D.with This bike rides _____and sells_____(用good,well) We should do something to stop polluting polluting 后是否还要加上名词呢?就是及物动词后必须加上名词么？ Alas!It was not ___ easy ___ that.A：very;as B:so;as C:too;to D:such;as为什么选B? not that的用法not that charlie's own life was easy!"可not that如何使用? It'S Not That Easy 歌词 皮球鱼为什么总在上面转圈 我家养的鱼,两条大鱼,互相的跳舞转圈,是干啥?要不要和别的鱼分开呀, Swimming is fun in warm weather,but skating is good（1）____ winter.A.at B.on C.enough D.so（2）_____ fun it is to jump into a pool or a lake!A.What a B.What C.How a D.How But basketball and colleyball are very new.And new sports（3）_____ game swimming is fun in ______weather.填hot 还是warm.为什么 sailing is fun in warm weather but skating is interesting in swimming is g( )in warm weather 填单词g开头的单词