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2020-09-01到2021-01-16

ch01-Introduction and data collection Exercise 1

1、 The process of using data collected from a small group to reach conclusions about a large group is called

A: statistical inference.
B: the scientific method.
C:sampling.
D:descriptive statistics.
答案: statistical inference.

2、 The estimation of the population’s average family expenditure on food based on the sample average expendit

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Unit 1 Java EE开发概述及环境搭建 Unit 1 单元测试

1、 MySQL数据库服务器默认使用的通信端口是____。

A: 3306
B:3308
C:8080
D:8088
答案:  3306

2、 Apache Tomcat服务器默认使用的通信端口是____。

A:80
B:8080
C:8088
D:3306
答案: 8080

3、 下面选项中，不是由包java.sql提供的接口是____。

A:Connection
B:ResultSet
C:PreparedStatement
D:DriverManager...

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部分章节作业答案，点击这里查看

Unit 1 People Around Us Unit 1 Test

1、 They decided to ____
their new car against theft.         

A:assure
B:sure
C:insure
D:ensure
答案: insure

2、 Can you _____ me that we won’t have any problems with this software?

A:assure
B:sure
C:insure
D:ensure
答案: assure

3、 The company put two extra clauses into their contract to ____ that

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