以后还有机会

为什么世界气候会变暖?为什么? 一个质量为M的物体放在水平面上,物体上方连接一根自然长度为L,劲度系数为k 的轻弹簧,现用手拉着弹簧上端P点缓慢竖直向上提升,直到物体离开地面一定高度,在这一过程中P点的位移是H,则物 一轻质弹簧的劲度系数为k,长度为L,一质量为m的物体从h高处自由下落到竖直放置的弹簧上端并将弹簧压缩,在此过程中,物体动量的最大值的位置距离地面的高度为 A h-L B L C L-(mg/k) D h-L-(mg/k) 连词成句 1 food is babies milk young the for naturl 2 recite our teacher the made chinese poem us中文也要3 sad must job be about she the losinng4 these what he flowers call wonders they5much try possible use as to rhymes as回答后给20钱 My grandma _____ Chinese food _____ Western food.A.would rather;thanB.prefers;thanC.would rather;toD.prefers;to为什么不可以选A 我觉得A也对啊 The building over there is a library,west of which is a department store.的翻译 求翻译：The cinema is west of the park. 电机里与线圈两端相连,而又彼此绝缘的铜半环叫什么 交流耐压时控制箱上显示的电流究竟是什么电流?有时候有几安,是泄露电流吗?泄露电流能这么大吗? 封闭母线交流耐压试验时'测得对地电容很小'''但为什么要求的耐压设备容量大'电流计算公式计算的电流和电压都满足但为什么打不起来 Daming made a model of a chinese spaceship.（改为一般疑问句） sound,a,spaceship,made.the.loud连词成句 1 make we chinese a paper spaceship can 连词成句2 make we chinese a paper spaceship can 3 her could i to talk 4 friend hand put helen's in her water some 5 of was his he proud father 6 yangliwei about spent hours 21 in space 7 his is he song favo 连词成句：comfortable you here conditions the feel make will 连词成句,翻译 today,no,made,feel,classes,having,us,surprised连词成句并翻译 维生素C泡腾片溶于水产生什么气体?为什么? 维生素C泡腾片投入水中产生气体的原因(见补充)维生素-C泡腾片中含有酒石酸晶体和碳酸氢钠粉末.没有水的时候,它们不能反应.加入水后制成酒石酸溶液和碳酸氢钠溶液,酒石酸与碳酸氢钠反 维生素C泡腾片在投入水中之前不产生气体的原因 柏维力维生素c泡腾片每片4克用多少水 低频逆变器3DD15的管子,如果再增加几个3DD15的管子,怎么加大前极推动电流 3DD15是什么? KBPC1510耐压和电流以及接法``` these,helpful,are,dogs怎么连词成句 填空：1、What do the workers make these robots ( ). 2、What do the workers do ( )the wheels?3、He stays at home.He wants to look for a( )4、Li Lei sits in the ( ) of the classroom5、Let's learn from and help ( ) other6、Different pe What make nice soundS?回答用什么句型? when you do reading quietly ,you do not make any sounds 译中文 compare the education system between Great britain and China 100--120 words英语作文啊 The Education System in the UK 中国王朝和英国王朝有什么区别?快 水沸腾时可将壶盖顶起,说明什么? My mother teaches English.She teaches French too.用both……and连接、 My mother teaches English.对English提问