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共找到 858 与BY;C 相关的结果，耗时72 ms
a=b是方程ax^2+by^2=1所表示的曲线为圆的A.充分非必要条件 B.必要非充分条件C.充要条件 D.既非充分又非必要条件
数学
若｛x=1 y=-1 ｛ x=2 y=2和｛x=3 y=c都是方程ax+by+2的解,求c的值
数学
若｛x=1 y=-1 ｛ x=2 y=2和｛x=3 y=c都是方程ax+by+2的解,求c的值.）
数学
He looks quite young _ her age?A.at B.by C.for D.to 先选择再解释就是这样一个问题 不要再不通过了!
英语
Mike came here ____ car,and peter came here ___ Mike"s carA in;in B by;in C by;by D in;by
英语
The pretty girl passing by )the eye of all the people standing there.A.attracting B.attracted C.catching D.caught 我知道caught是作谓语 但是帮忙分析
英语
下句子结构 passing做
The child ( )by Grandma Wang all these yearA has been taken care of B was taken care of C taken care of D being taken care of请问：为什么要用完
英语
时?现完不是要对现在有影响?
they ----by her father A be married B were married C will get married D be marrying 说理由 翻译这句话
英语
Jenny can"t have left the office at four,or ________home by now.A she"ll get B she has got C she will have got D she"d have got我想知道原因，
英语
么你们的答案不一样啊
The middle-aged scientist who( )abroad for 20 years by the end of next month,is on the way back tohis moterland.A.had been B.is stayin
英语
C.will have b
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