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【单选题】
设总体X的概率密度为 为总体X的简单随机样本,其样本方差为 ,则 ( )。A.
0.2
B.
4
C.
1
D.
2
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皮皮学刷刷变学霸
举一反三
【单选题】The police asked me to _______ exactly how it happened.
A.
express
B.
draw
C.
describe
D.
imagine
【单选题】An inventor needs to have a creative and _____ mind .
A.
imaginable
B.
imaginative
C.
imaginary
D.
imaging
【单选题】He spoke loudly ____ the audience could hear him clearly.
A.
so
B.
that
C.
so that
D.
in order to
【单选题】关于电控悬架压缩空气系统元器件的安装位置,说法不正确的是
A.
变阻尼减振器安装于空气弹簧的上端
B.
高度控制排气电磁阀安装于空气干燥器的末端
C.
高度控制电磁阀安装于空气干燥器的末端和气动减振器之间
D.
以上都不对
【简答题】So _____ that even the people in the next room could hear him. A. loudly he spoke B. he spoke loudly C. loudly did he speak D. loudly spoke did he
【单选题】He spoke loudly and slowly everyone could understand him.
A.
since
B.
until
C.
so that
D.
unless
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