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【单选题】
方差分析的思想就是，假设所有的数据都没有变异，那么它们的取值应该一样，都等于：A.
组均值
B.
总均值
C.
总中位数
D.
总方差
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反馈参考答案：
举一反三
【单选题】— Did you call on any of your old friends when you returned to your hometown ? —______ of them . They were all very busy .
A.
Nobody
B.
None
C.
Both
D.
Neither
【单选题】---When _______ your computer ___________? ---Yesterday afternoon.
A.
did ; repair
B.
did ; repaired
C.
was ;repaired
D.
has ;repaired
【单选题】－When did you get your first pair of skates? －_______.
A.
For 6 years
B.
Since I was 6 years old.
C.
When I was 6 years old.
D.
Since 6 years ago.
【单选题】When did your father ___________ your mother?
A.
get married
B.
marry with
C.
marry
D.
marry to
【单选题】低渗性缺水时,机体病理生理变化中哪一项不存在:
A.
血清钠低于正常范围，细胞外液呈低渗状态
B.
血管升压素分泌先少后多
C.
肾素-醛固酮系统兴奋，肾排钠减少，Cl 再吸收减少
D.
血容量下降可不明显
E.
细胞内渗透压基本不变
【简答题】执行（）命令操作，元器件按左端对齐。
【单选题】学测6 When did your father __________ the Army?
A.
join
B.
join in
C.
take part in
D.
attend
相关题目：
【单选题】When did your father ___________ your mother?
A.
get married
B.
marry with
C.
marry
D.
marry to
参考解析：
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