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【多选题】
一元线性回归方程 y=a+bx ,其判定系数为 0.64 ,则 x 与 y 的相关系数可以是()
A.
0.8
B.
0.32
C.
-0.8
D.
不可计算
E.
其他值
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【单选题】The National Aeronautics and Space Administration (NASA) has announced plans to return people to the moon by 2018. 'And this time', according to a NASA press release, 'we're going to stay'. NASA wants...
A.
People will land and remain on the moon.
B.
Equipment will be carded and installed there.
C.
More CEVs will be made regularly.
D.
A special device will be used in landing.
【单选题】听力原文:M: So you really believe that clothes carry a kind of message for people and that what we put on is in some way a reflection of what we feel? W: Oh yes, very much so. Now people are beginning to ...
A.
Individual taste and love for beauty.
B.
A desire to express oneself and display one's wealth.
C.
Individual taste and a desire to express something subconscious.
D.
Love for beauty and a desire to impress other people.
【判断题】曲线z=f(x,y)在曲线上一点P存在不平行于z轴的切平面的充要条件是函数f在P上可微。()
A.
正确
B.
错误
【单选题】—I’m a little nervous to give an English speech this afternoon. —Come on ! Believe in ________  and you can do it.
A.
myself
B.
yourself
C.
himself
D.
herself
【单选题】某企业2014年流动资产平均余额为100万元,流动资产周转次数为7次.若企业2014年营业利润为210万元,则2014年营业利润率为( ).
A.
30%
B.
50%
C.
40%
D.
15%
【简答题】中央处理器(CPU)是计算机系统最核心的部件,包括运算器和()两个部分。
【判断题】从抽象绘画中可以看到抽象情感和内在结构两部分内容。()
A.
正确
B.
错误
【简答题】大学生心理健康的标准。
【单选题】Which of the following is NOT true, according m the passage?
A.
Americans believe individualism is central to their identity.
B.
American life combinates teamwork with individualism.
C.
Jazz reflects two conflicting factors of American life.
D.
Jazz fused elements from Africa and Europe into a new culture.
【简答题】sustainable discrepancy address enduringmalnutrition disruption vigilant diagnoseprompt ethical initiative launchboost casualty parse affluenceproxy transformative decent correlate1. To...
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