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return on capatial capex 如题 维语 妈妈怎么说 维语“好了”怎么说? 极坐标变化u(x,y)=u(r cos(x),r sin(x)) 偏u偏r恒为零怎么说明u是常数呢? CAPEX和OPEX的意思是什么? 收入－OPEX＝? capex project什么意思 改正句中错误：Did you type the letter last afternoon? I would choose a photo in which I would be smiling cheerfully for the camera in the time capsule请问这句话的意思是什么?有没有结构之类的问题? 作者感叹 我不明白,中国画家为什么不绘出一幅最能表现孔子其人的荒野图,请你尝试 孔子画像旁边写的什么字 把一般现在时变成过去式,过去时变成一般现在时.1 My sister went to park1 My sister went to park.2 He read books last month.3 I watched TV last evening.4She catches fish on Sunday5What do you do in the afternoon went 一般现在时 聚精会柛什么意思 事精什么意思 very怎么读 a place for settlement什麼意思? we can see that the length of time people spent at school was much greater in 1980people spent at school 前面是不是沈略了that,为什么可以沈略 请问Whoever does wrong is punished in the end.这是什么从句?主语是什么呢? These-flowers-canbeplantedeasilyinhome gardens but they require plentyof water and not too-much-sun I was just the wrong age怎么理解 end on the wrong note 电子时钟显示器是每天从00:00到23:59,则每天显示的各个数位之和为23的概率是多少? 聚精回神中的会是什么意思 “Please put your books in right place.”I Chinese it means_______.A.右边的B.合适的C.正常的D.正直的“Please put your books in right place.”I Chinese it means_______.A.右边的 B.合适的 C.正常的 D.正直的写出为什么？ 电子数码钟如图所示,指示时间由00:00:00到23:59:59.那么在一昼夜里,这个钟上恰显示4个数字“3”的时间共有多少秒? 电子数码钟指示时间由00:00:00到23:59:59.那么在一昼夜期间钟表上恰显示有4个数字3的时间共有 种 父子怎么样 电子数码钟如图所示,指示时间由00:00:00到23:59:59.那么在一昼夜里,这个钟上恰显示4个数字“3”的时间共有多少秒? very可以有什么高级词汇替换 求Dj Doc的fat girl的中文歌词! shorts怎么读