单相电机电阻多少正常

people on that island have many different and interesting ways of ______ thingsa .to do b.do c.doing d .does 句子改错：In fact,people have different ways eating different food.改错，急呀 林林做了一个圆柱形的灯笼.上下底面的中间分别留出了78.5平方厘米的口他用了多少彩纸? 林林做了一个圆柱形的灯笼（如图）.上下底面的中间分别留出了78.5平方厘米的口,他用了多少彩纸?（圆柱形灯笼）直径20厘米, 林林做了一个圆柱形的灯笼 上下地面分别留出了78.5平方厘米的口 他用了多少彩纸 she was late for he english class this morning.how come?,he never came this morning怎么翻译how come?as far as i konw...... 帮忙解决一道证明题：先凑合着以（ ） 代表绝对值符号.（a）< 1 ,(b)< 1 ,试证明：（a+b）/(1+ab) < 1 帮我解决一道证明题~已知：关于X的一元二次方程(a-c)x*x+(c-b)x+(b-a)=o有两个实数根.求证：2a=b+cx*x(x之间是乘号）两实数根相等 帮忙解决一个证明题问题是已知一个四边行与它的外接四边行,四条对角线交于一点,要证这两个四边行是平行四边形． The bike____last year.a.bought b.has been bought c.was bought d.had been bought.选哪个?我觉得是c,因为last year不是一个时间段,但答案是b,我就费解了~请问高手们为什么答案是b.thank John bought his bike at the end of last year =John—— ——his bike ——the—— of last year 改写 She demanded that he ( ) her the money he borrowed form her.A returnedB returningC should returnD returns sportsman all over china went to nanjing to ______the 10th national handsa last october.为什么填attend不是take part in?是national games 以"It is over a year now since Cthya came to china"的阅读 She kas been to Beijing_______(two) since she came to China.括号里填什么 Mary is_____the police station(警察局）,but she can't ______it. 一个圆形餐桌的直径是2米,它的周长是多少米?面积是多少米? 一个圆形餐桌面的直径是2米,它的周长是多少米?它的面积是多少平方米?如果一个人需要0.5米宽的位置就餐,这张餐桌大约能坐多少人? 圆形餐桌面儿的直径是2米,它的周长是多少米,它的面积是多少平方米? 请帮忙做一道证明题,已知RT△ABC,∠C=90°,D为BC边的中点,连接AD,过C做垂线CE与AD交与点M,与AB交与点E,连接BM,求证：∠ABC=∠BMD.） the iberians是什么意思 牛津进阶英汉双解词典和中阶英汉双解词典的区别? 牛津进阶和高阶词典那一个更好?区别在哪? the professional是什么意思 如何判断句子里哪些是主语,谓语,宾语主语,谓语,宾语,组成一句话 华尔街英语的口语教学怎么样?想重点学习英语口语,选择华尔街英语行吗? The Professional Development什么意思 华尔街英语的口语教学怎么样啊?口语实在是烂! 解一道几何证明题引三条直线分别平行三角形的三边,每条直线与其所平行的边之间的距离等于该边的长度,同时,对于每条边,平行i、于它的直线和该边所对顶点位于该边的两侧.证明：三角形 we manufacture the professional look for managers 一道几何证明题,直角梯形ABCD,角C=角B=90度,E是BC上一点,连接AE、DE.已知AD=AE,AB=BC,求证CD=CE,最好很快有 什么意思the Professional Engineers Act.Revised StatutesProfessional Engineers Ontario,25 Sheppard Ave.,W.,Ste 1000 Toronto ,ON,M2N 6S9 416 224-110这句也帮忙翻一下，国外的简写不知道啥意思