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【单选题】
单因素方差分析的结果是拒绝H0:mu_1=mu_2=mu_3,说明( )A.
mu_1≠mu_2，mu_1≠mu_3，mu_2≠mu_3
B.
mu_1≠mu_2，mu_2=mu_3
C.
mu_1=mu_2，mu_2≠mu_3
D.
mu_1，mu_2，mu_3三者之间至少有两个不相等
E.
mu_1≠mu_2，mu_2≠mu_3
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反馈参考答案：
举一反三
【单选题】光学全站仪的正确轴系应满足( )。
A.
视准轴⊥横轴、横轴∥竖轴、竖轴∥圆水准轴
B.
视准轴⊥横轴、横轴⊥竖轴、竖轴∥圆水准轴
C.
视准轴∥横轴、横轴∥竖轴、竖轴⊥圆水准轴
【简答题】翻译:中华文明
【单选题】Helena: Oh, welcome, come in, please. Jack: ______ And here's a small gift. Let me wish you happy every day. Helena: Thank you. Oh, what a beautiful birthday card!
A.
Many happy returns.
B.
Enjoy yourself.
C.
Hoping you'll be well soon!
D.
I wish you the best of luck!
【单选题】–Let me teach ____ daughter Japanese. --Thanks. If so, she won’t have to learn by ____.
A.
you, you
B.
your, her
C.
your, herself
D.
her, yourself
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