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混凝土中掺外加剂,降低水灰比每平方米混凝土可节约水泥百分之十? 求学霸指导电路基础作业 3道电路题目, They live in the same town 划线部分提问(the same town划线)答案是什么? 什么是奇次谐波它的特点是什么? how far apart do they live?________I know ,they live in in the same neighborhooda.as long as b.as far as c.as well as d.as often as 您好,因本酒店热水泵运行故障,房内不能提供温水洗浴.对您造成的不便敬请谅解.求英文翻译.在线等 为什么要开泵洗澡?供应热水? 功放机的“PRESET”键是什么意思?KTV中的功放机上有一个“PRESET”键, Mo代表什么元素化学 化学符号Mo代表什么? 音箱功放上面的英语功能键是什么意思?功放按键：BAL SL SR SW CEN TREBLE BASS (ECHO DELAY) INPUT CH-MODE MENO MIC-MENU 光的强度和波的振幅有关吗? 为什么波的每点 振幅 和周期 都一样 非全反射时,入射波、反射波、折射波之间的振幅存在什么关系?我已知全反射时,入射波与反射波振幅相等,但存在相位差.非全反射时,二者不相等吧?存在什么关系?我现在已知道电磁波的能量 波的振幅和速度有关系吗?如果振幅更大,那么波的速度就更快吗?那还跟波长有关吗?我是初学者,完全不知道其关系. We now ___live a house.We now are live in a house.这样可以吗. 英语翻译It is t___ the pollution is worse and worse.据首字母填空并翻译 什么是3%硼酸溶液或0.5%醋酸铅溶液 二极管如何测量 二极管 如何测量 是好是坏 rule of thumb give someone the cold shoulder twiddle your thumbsrule of thumbgive someone the cold shouldertwiddle your thumbs why did you give me the cold shoulder.翻译成汉语、谢谢. give fur the cold shoulder什么意思? 英语翻译：I just wanted someone who would talk to me for the sake of having someone to talk to, 驻波 谐波 是什么? 驻波是干什么的?什么问题可以联系到驻波? 翻译段落:I live in a small town of 398 people located halfway between San Francisco and the Oregon People today live longer than____ in the past.that和 those选哪个呢?为什么? 请问99%硼酸含硼是多少? dear lily,my town is very small.only a few hundred people live here.Dear Lily, Thanks for your letter and telling me songthing about your town .Now let me introduce my town to you. My town is very small.Only a few hunded people live here.It has a riv 黄蜡石在一厘米高度掉在玻璃上会吧玻璃打裂吗?