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【单选题】
描述一组对数正态分布资料的集中趋势宜采用A.
均数
B.
中位数
C.
几何均数
D.
标准差
E.
变异系数
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反馈参考答案：
举一反三
【简答题】到目前为止，我国哪个海区赤潮发生最为频繁?
【简答题】“你有一种思想, 我也有一种思想, 彼此交换,每人至少有两种思想”, 这体现了信息的( )
【单选题】What can you do if the international line is engaged?
A.
Ask the operator to call you back later.
B.
Make a 'person-to-person' call.
C.
Call back outside office hours.
D.
Walt and call again when the line is free.
【单选题】—What do you call these animals? —We call them kangaroos. The structure of the sentence is _____. [ ]
A.
S+V
B.
S+V+IO+DO
C.
S+V+DO+OC
D.
S+V+DO
【单选题】If you miss a class, what should you do to find out what assignment was given?
A.
Call the teacher or a classmate.
B.
Give an excuse.
C.
Remind the teacher you were absent.
D.
Ask a classmate when you attend the school.
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