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【单选题】
下列哪些现象应该利用算术平均数计算( )。A.
已知工资总额及工人人数求平均工资
B.
已知各期环比发展速度求平均发展速度
C.
已知实际产量和计划完成百分比求平均计划完成百分比
D.
已知产品产量及各产品的单位成本求平均成本
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举一反三
【单选题】One machine can do as much work as ______.
A.
40% of the people
B.
4% of the people in the world
C.
40 people
D.
75 000 people
【单选题】Do be there by 9:40 means ___________
A.
9:40之前到
B.
9:40之后到
C.
9:40之前务必要到
D.
9:40之后务必要到
【单选题】How do the additional 40% of the employers feel about the criminal history of their applicants?
A.
They think the criminal history of their applicants is not very important.
B.
They are still interested in whether their applicants have committed crimes or not.
C.
They feel it is risky to do background checks for their applicants.
D.
They are not in favor of asking applicants criminal record on job applications.
【简答题】阅读短文，回答 40～43 题： 第 40 题 How many teaching hours do most of the sch001s haye in the U．S．?
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