相关系数r的数值范围是()。A.|r|<1 B.|r|≤1 C.|r|>1 D.|r 发布时间:2017-06-03 12:52 │ 来源:www.tikuol.com 题型:单项选择题 问题: 相关系数r的数值范围是()。A.|r|<1B.|r|≤1C.|r|>1D.|r|≥1
题型:单项选择题 下列有关光现象,说法正确的是A.物体在水面中的倒影是等大的、倒立的、虚像B.阳光下,微风吹拂的河面,波光粼粼,这里蕴含着光的反射C.一束光与镜面成30°角入射在平面镜上,则其反射角也是30°D.光总是沿直线传播的 查看答案
题型:单项选择题 If you _______ my advice, you _______ your failure now.You _______ your victory.A.took ...wouldn’t cry over ...would celebrateB.had taken ...wouldn’t have cried over ...would have celebratedC.had taken ...aren’t crying over ...are celebratingD.had taken ...wouldn’t be crying over ...would be celebrating 查看答案