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【单选题】
在其他条件不变的情况下,估计时所需要的样本量与( )。A.
总体方差成反比
B.
置信水平成反比
C.
总体方差成正比
D.
估计误差成正比
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反馈参考答案：
举一反三
【单选题】She doesn’t do her job though she has .
A.
carefully enough; enough time
B.
enough careful; time enough
C.
careful enough; enough time
D.
enough carefully; enough time
【单选题】He spends _________on English and he’s _________it．
A.
enough time；enough good at
B.
time enough：good enough for
C.
time enough；enough good for
D.
enough time：good enough at
【简答题】句型转换。 1. He has enough time. (改为否定句) He _________ _________ enough time. 2. What's wrong with you? (改为同义句) What's _________ _________ with you? 3. The new shoes cost him one hundred yuan. (改为同义句) He _...
【简答题】会计基本等式:( )=权益,这里的权益包括债权人享有的( )和所有者享有的( )。因此,会计基本等式又可以表述为:( )=( )+所有者权益
【简答题】分析案例,修改教师提问。在音乐活动《小鸡出壳》的教学中,教师提问了这样一个问题:“小鸡宝宝怎样出来呢?”有的下朋友说:用榔头砸,有的说:用来摔一下等,这显然不是教师想要的答案。你作为该教师,可以用什么提问方式?
【单选题】There is never enough time to do everything, ______ there is always enough time to do the most important thing.
A.
and
B.
but
C.
or
D.
so
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