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【多选题】
从一个总体可以抽取一系列样本，所以（）A.
样本指标的数值不是唯一确定的
B.
所的可能样本的平均数的平均数等于总体平均数
C.
总体指标是确定值，样本指标是随机变量
D.
总体指标与样本指标都是随机变量
E.
样本指标的数值随样本不同而不同
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举一反三
【单选题】听力原文：M：Well，(22) today's personality guest is Sally Gladwin．Sally's only sixteen years old．Well，it's a rather incredible success story，isn't it，Sally? W：It is，yes，really． M：You see，Sally invents games...
A.
In a studio.
B.
In a store.
C.
At the fashion show.
D.
At the park.
【单选题】关于成人血清总IgE值,哪项是正确的
A.
20～200g／L
B.
20～200mg／L
C.
20～200ug／L
D.
20～200u／L
E.
20～200ku／L
【多选题】下列工作内容中，属于项目监理组织结构设计的有（）。
A.
确定项目监理机构目标
B.
选择组织结构形式
C.
确定管理层次与跨度
D.
划分项目监理机构部门
E.
制定监理工作和信息流程
【简答题】I. Choose the right word for each blank from the list given below. In today’s fast-paced, much emphasis is placed on the final result of an endeavor. American society places a premium on success; our ...
【简答题】翻译下面句子:Almost equal l y impo r tant is th a t, as the quot a tion indic a tes, Pl a to defined a pa r ticular view of w h a t m a them a tics w as, or should b e .
【简答题】下列关于公民基本权利和义务说法正确的是（ ）。
【单选题】听力原文：M：Well，today's personality guest is Sally Gladwin．Sally's only sixteen years old．Well，it's a rather incredible success story，isn't it，Sally? W：It is，yes，really． M：You see，Sally invents games，but ...
A.
In a studio.
B.
In a store.
C.
At the fashion show.
D.
At the park.
【单选题】SECTION B INTERVIEW Directions: In this section you will hear everything ONCE ONLY. Listen carefully and then answer the questions that follow. Questions 1 to 5 are based on an interview. At the end o...
A.
They spend too little on training.
B.
They are unaware of their training expenses.
C.
They receive state subsidies for training.
D.
They increase their training budgets.
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