若点A(n,2)与点B(-3,m)关于原点对称,则n-m=(  ) A.-1      B.

若点A(n,2)与点B(3m)关于原点对称,则nm(  )

A.-1      B.-5       C1      D5

答案

D  

相关题目

2007年是依法治国基本方略提出十周年。十年来,我国政府、
2007年是依法治国基本方略提出十周年。十年来,我国政府、司法等机关头上的紧箍咒越来越紧了,公民权利的保护超过了以往任何时候。我国实行依法
已知某无色溶液中可能含有H+、Ag+、Cu2+、Na+、OH—、Cl—、NO3
已知某无色溶液中可能含有H+、Ag+、Cu2+、Na+、OH—、Cl—、NO3—、CO32—等八种离子中的几种,往该溶液中滴入几滴石蕊试液,石蕊试液变红,则原溶液中
Young people can have problems with their minds. Some students become worried be
Young people can have problems with their minds. Some students become worried because they have to study very hard. Others have trouble getting on well with people like parents and classmates. Liu Wei
It was one of the hottest days of the dry season.We had not seen   1   for
It was one of the hottest days of the dry season.We had not seen   1   for almost a month.The crops were dying.If it didn’t rain soon,we would lose everything. At noon,when I was  
将函数的图像,按平移到,则的解析式为            .
将函数的图像,按平移到,则的解析式为            .
能正确反映一月等温线分布图的叙述是            A.
能正确反映一月等温线分布图的叙述是            A.北半球大陆等温线向高纬凸出   B.北半球海洋等温线向高纬凸出     C.南半球大陆等温
读右图回答7—9题: 7、图中山脉属干旱与半干旱地区分界线
读右图回答7—9题: 7、图中山脉属干旱与半干旱地区分界线的是(    )    A.①      B.②        C.③       D.④ 8、甲地形区的主要
 “饥饿营销”是一把双刃剑。如果某企业过度制造市场“饥
 “饥饿营销”是一把双刃剑。如果某企业过度制造市场“饥饿”,进而提高产品售价,当产品的价格提高到消费者接受不了或不愿接受的时候,就会感

最新题目