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【单选题】
多组均数比较的方差分析,如果P<0.05,则应该进一步做的是A.
两均数的t检验
B.
区组方差分析
C.
方差检验
D.
方差分析后的两两比较
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举一反三
【单选题】Mrs. Black doesn't know if her Ameriean friend _____ to Heilongjiang. If he _____ here,she will meet him at the airport. [ ]
A.
will come ; comes
B.
will come ; will come
C.
comes ,will come
【单选题】—Is Mrs. Black really badly ill? —_____. She's in hospital . [ ]
A.
I don't think so
B.
No, she isn't
C.
I don't hope so
D.
I'm afraid so
【简答题】什么是基因载体?试举一二例常用的基因载体。
【单选题】Mrs. Black doesn't mean that Susan is the right person for the job, ______ she?
A.
is
B.
does
C.
isn't
【简答题】阅读理解。 Mrs. Black is sixty-nine years old. She only has a daughter named Sandra. Mr. Black died twelve years ago. Mrs. Black was very sad and lived in her house alone. Two years ago her daughter had a ...
【简答题】某4变量逻辑函数的卡诺图中有9个1，化简成最简与或表达式后，最少有 （请填数字）个与项。
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