学生没有按时完成作业需要如何解决

直流发电机发出的电是多少V的?什么样的直流发电机发出电量V度最高A数大,最高是多少V电和多少A的?直流发电机转速慢发电多,还是转速快发电多?最小的风能和太阳能发电机能发出多少V的电 hold your horses 蹒跚一词与文中哪句话相照应,背景的中的蹒跚 hold your fucking horses我知道这是骂人的.但是怎么解释. invitation与invitating的区别? thank you for 为什么用动名词. your 为什么用名词额? invitation的现在分词 until作介词时候的用法 英语问题：be surprised at 后应加什么?如是动词,是动名词,还是不定式?请举个例子.好的有悬赏. be surprised 后加什么? +（-4）的意义是什么,急,正在做作业, 这个是家庭做作业 Understand? understand understand什么意思 understand 意思 These are the doctors and nurses (send)tp work there如题 The headmaster didn't______our new plan.A:replyB:reply toC:answer forD:answer ro求详解. 无忧无虑逍遥自在,繁琐之事从不顾的动物打一生肖 They will go on watching TV for hours and hours. 翻译 翻译英文—— 1、买一台电视机怎么样?_____ _____ _____ a TV set? 先填空再翻译Mr.Smith is an old man.He __1__tow big houses and a new car.He has no__2__,but he has four__3__--two sons and two daughters.One son is __4__England.His name is Tom.The other son is from America. His name is Jack.One daughter is from 英语翻译There is a very big playground in our school.So many students in our school like to play ball games --1---.Some like to play ---2-- and some like to play volleyball.--3--- all the boy like to play foodball.They often play football after s understand是什么意思? understand是什么意思及反义词 understand? understand是什么意思啊?有好评 如何理解 辉煌属于希腊,恢宏归于罗马 please ___　___ ___the tv的同义句 "himself"这个单词是什么意思 relieve himself是什么意思 Please turn down the TV set so as to make no noisy at the midnight,这句话正宗么? 初二下英语请填写空白处