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【单选题】
设 , 已知,若样本容量n和置信度 均不变,则对于不同的样本观察值, 的置信区间长度()
A.
变长
B.
变短
C.
保持不变
D.
无法确定
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A.
uncle
B.
aunt
C.
cousin
D.
sister
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A.
房地产经纪人执业资格
B.
房地产经纪人职业资格
C.
房地产经纪人协理职业资格
D.
房地产经纪人协理从业资格
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A.
房地产经纪人执业资格
B.
房地产经纪人协理职业资格
C.
房地产经纪人职业资格
D.
房地产经纪人协理从业资格
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A.
my sister
B.
my sister’s
C.
she’s
D.
her
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A.
必备条件;
B.
基本条件;
C.
必需条件;
D.
必然条件。
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A.
先决条件
B.
必备条件
C.
基本条件
D.
重要条件
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