皮皮学,免费搜题
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【单选题】
在作两样本均数比较时,已知n 1 、n 2 均<30,总体方差不极度偏态的资料(    )
A.
t'检验  
B.
X 2 检验  
C.
u检验  
D.
秩和检验  
E.
t'检验和秩和检验均可
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举一反三
【单选题】— ____________ your name? — My name's Kelly. [     ]
A.
What
B.
What's
C.
Who's
【单选题】Henry Kelly's research on Valentine's Day ______.
A.
is a widely accepted explanation
B.
is well-based on conclusive evidence
C.
is a reasonable speculation
D.
is just a wild and unreliable guess
【单选题】Roger:Hi, Kelly! What's up? Kelly: __________Same old thing.
A.
Nothing up.
B.
Nothing new.
C.
Everything's OK.
D.
Everything's the same.
【单选题】Kelly’s main job is _____ the message about protecting the environment.
A.
helping spread          
B.
to help spreading     
C.
to help spread
【单选题】 Kelly _ _ be 35. She looks only 18!
A.
could
B.
can't
C.
must
【多选题】下列属于后展类的体式有( )
A.
简易鸽
B.
风吹树
C.
展臂
D.
人面狮身
【判断题】document.write()方法表示向文档写HTML表达式或JS代码。
A.
正确
B.
错误
【单选题】—What was Kelly Chan’s concert? —It __________ everyone present.It’s a pity you’ve missed it.
A.
represented
B.
satisfied
C.
shocked
D.
delighted
【单选题】—Kelly, who’s the girl _____ glasses in the photo? —It’s me. I used to wear glasses and have long hair.
A.
by
B.
of
C.
on
D.
with
【单选题】What is the man’s last name?
A.
Young.
B.
Purcell.
C.
Raleigh.
D.
Kelly.
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