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【单选题】
设总体X～N(μ，σ2)，其中μ，σ2均未知，(X1，X2，…，Xn)为来自该总体的样本，令 对假设H0：μ=μ0 H1：μ≠μ0，则检验统计量应为( )．
A.
B.
C.
D.
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参考答案：
举一反三
【单选题】小纸片会在发声的扬声器上跳动 , 树叶随风荡漾发出 “ 哗哗 ” 的响声,这些现象说明了 ( )
A.
声音是由物体振动产生的
B.
声音能在水中传播
C.
声音的传播需要介质
D.
声音能传递信息
查看完整题目与答案
【单选题】The girl usually does her homework _____ it is very late at night.
A.
until
B.
when
C.
before
查看完整题目与答案
【单选题】The girl usually does her homework _____ it is very late at night .
A.
until
B.
when
C.
before
D.
after
查看完整题目与答案
【单选题】已知三个数3, ,21三数成等差数列,则 等于( )
A.
9
B.
10
C.
11
D.
12
查看完整题目与答案
【单选题】The girl usually has supper by herself ____her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
查看完整题目与答案
【单选题】The girl usually has supper buy herself___her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
查看完整题目与答案
【单选题】【D8】 MAN: OKAY, MR. TAYLOR,LET' S GO AHEAD AND BEGI N. FIRST OF ALL, TELL ME ABOUT YOUR LAST JO B. MR. TAYLOR: WELL, AS STATED ON MY RESUME, I' VE WORKED FOR FIVE YEARS AT HI-TECH COMPUTERS. MAN: OKAY...
A.
AND HOW ABOUT WEBSITE AUTHORING SKILLS?
B.
I THINK I HAVE ALL THE INFORMATION I NEED!
C.
I'M AFRAID I'VE NEVER USED THOSE CGI THINGS.
D.
FIRST OF ALL, TELL ME ABOUT YOURSEL F.
查看完整题目与答案
【单选题】已知 3 , , 21 三个数成等差数列,则 等于 ( )
A.
9
B.
10
C.
11
D.
12
查看完整题目与答案
【简答题】听下面一段对话，回答第1小题。 1. How long does the girl usually spend on her homework? A. For half an hour B. For about two hours. C. For about three hours.
查看完整题目与答案
【单选题】The girl usually her as supper by herself _________her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
查看完整题目与答案
相关题目：
【单选题】小纸片会在发声的扬声器上跳动 , 树叶随风荡漾发出 “ 哗哗 ” 的响声,这些现象说明了 ( )
A.
声音是由物体振动产生的
B.
声音能在水中传播
C.
声音的传播需要介质
D.
声音能传递信息
查看完整题目与答案
【单选题】The girl usually does her homework _____ it is very late at night.
A.
until
B.
when
C.
before
查看完整题目与答案
【单选题】The girl usually does her homework _____ it is very late at night .
A.
until
B.
when
C.
before
D.
after
查看完整题目与答案
【单选题】已知三个数3, ,21三数成等差数列,则 等于( )
A.
9
B.
10
C.
11
D.
12
查看完整题目与答案
【单选题】The girl usually has supper by herself ____her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
查看完整题目与答案
【单选题】The girl usually has supper buy herself___her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
查看完整题目与答案
【单选题】【D8】 MAN: OKAY, MR. TAYLOR,LET' S GO AHEAD AND BEGI N. FIRST OF ALL, TELL ME ABOUT YOUR LAST JO B. MR. TAYLOR: WELL, AS STATED ON MY RESUME, I' VE WORKED FOR FIVE YEARS AT HI-TECH COMPUTERS. MAN: OKAY...
A.
AND HOW ABOUT WEBSITE AUTHORING SKILLS?
B.
I THINK I HAVE ALL THE INFORMATION I NEED!
C.
I'M AFRAID I'VE NEVER USED THOSE CGI THINGS.
D.
FIRST OF ALL, TELL ME ABOUT YOURSEL F.
查看完整题目与答案
【单选题】已知 3 , , 21 三个数成等差数列,则 等于 ( )
A.
9
B.
10
C.
11
D.
12
查看完整题目与答案
【简答题】听下面一段对话，回答第1小题。 1. How long does the girl usually spend on her homework? A. For half an hour B. For about two hours. C. For about three hours.
查看完整题目与答案
【单选题】The girl usually her as supper by herself _________her parents don't have to work overtime.
A.
until
B.
unless
C.
while
D.
the moment
查看完整题目与答案
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