约分是什么意思

已知B是A与C的等差中项,C是A与B的等比中项,｛A, B, C互不相等｝则A:B:C=? 国家和民族消亡后,宗教还会存在吗? 地跨亚非欧的帝国有哪些?历史上地跨亚非欧的帝国有哪些? 一直L经过P（2,-2）,且与X=1,Y=-1围成的面积为4,求直线方程L说明,这里有2条直线,只要求K大于0,倾斜角是锐角的这条就够了主要是老算错，算不来 this kind of cloth isn't easy___.a.washed b.to be washed c.to wash d.washing 我们老师跟我说,选c.可是我觉得衣服应该是被洗,应该选b啊,难道是我概念错了嘛? I think the weather will be fine tomorrow.Oh ,I hope ____ .A it B so C is D does说明为什么选这个谢谢 .the man attempts ___from England to FranceA.swim B.swam C.to swim D.swimming又有一题，不好意思There are many people___in the field(这个单词什么意思）A.work B.to work C.worked D.working When his father died ,Jim was a real _____.He was a good boy.he held his whole family.A hero B owner C support D child你们认为选什么啊?要理由! 求下列无理数的整数部分和小数部分 【√3】； 【﹣√7】； 【6-√3】 May I have some tickets?Sorry,You're too late.We have____left.A.either B.neither C.both D.none选D还是B?请说理由谢谢 如图,⊙O₁与⊙O₂相交于A、B两点,割线CE、DF都过点B,并且AB2=BC*BD,∠ABC=∠ABD.求证：（1）AD是⊙O₁的切线,AC是⊙O₂的切线（2）CE=DF. △ABC₁,△ABC₂,△ABC₃...△ABCn,是一组以AB为斜边的直角三角形,试判断点C₁,C₂,C₃,Cn是否在以AB为直径的同一圆上,并说明理由 初三数学问题（无理数求整数部分和小数部分）已知根号6+1的整数是a小数部分是b 求a b的值 英语翻译 求英语第三段翻译 请高手 翻译一下这三段英文~~~~~XBOX360版合金弹头XX的成就说明 请高手给翻译下~~Good luck with this, I suggest playing on beginner and choosing Ralph as he seems to get a free life every so often. He can be knocked down and n 翻译这三段英文! 英语翻译1 Armed with such a precept,a number of doctors my slip into deceptive practices that they assume will "do no harm" and may well help their patients.2.I had a tiny apartment in the Latin Quarter overlooking a cemetery,and I was earning ba 关于变质的氢氧化钠的问题最好帮我把图像分析清楚， 已知N=2的12次方乘以5de8cifang,求N的正整数位数 "万里长征人未还"征是什么意思 麻烦快点 简便运算.5/9x2/5除4/9 （1+1/15）x10 4除8/3-3/5 98除（1/15除2/7）（x）指乘 答对有赏哦 已知单项式-3的4次方a的2n次方b的15次方的次数高于4的2次方a的5次方b的4n次方的次数,符合条件的正整数n值 已知单项式25乘以X的2n方乘以Y的5次方的次数高于4乘以X的4n方乘以Y的次数,问,正整数n的值有几个? 3x的m＋2n次方,y的4m+4n次方的和是单项式,那么这两个单项式的积是多少 关於晋代孙康因家贫无油常映雪的词语要四字词语的2个小时内好的可以采纳 对于白色的花,花瓣里含有什么东西? 些小吾曹州县吏的下一句是什么? 云崖暖 铁索寒 有什么长征词? 在词语长征中的意思是