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【单选题】
检验两个相互独立的正态总体的方差 与 是否有显著性差异时可用( )。A.
z检验法
B.
t检验法
C.
检验法
D.
F检验法
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【简答题】( )控件通常用来显示指定的数据,如果要查看某条数据的详细信息则需要使用( )控件来实现。
【单选题】If you will require childcare in order to attend the meeting, please _______us by leaving a message for Jan or Martha at Jordan’s office.
A.
justify
B.
notify
C.
clarify
D.
justify
【单选题】We require thecaptioned goods to be insured _____ your end, and we shall be much obliged if you will arrange insurance _____ ourbehalf. at
A.
at, on
B.
in, for
C.
on,
D.
with, for
【单选题】If you will require childcare in order to attend the meeting, please _____________ us by leaving a message for Jan or Martha at Jordan's office.
A.
certify
B.
notify
C.
classify
D.
qualify
【简答题】If you will require childcare in order to attend the meeting, please ______________ us by leaving a message for Jan or Martha at Jordan’s office.
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