Smith和John玩数字匹配游戏，每个人选择1、2、3，如果数字相同， John给Smith 3美元，如果不同，Smith给John 1美元。列出收益矩阵。..

第1题

[] 如果参与者以1/3的概率选择每一个数字，证明该混合策略存在一个纳什均衡，它为多少？

A、Smith和John玩数字匹配游戏，每个人选择1、2、3，如果数字相同，John给Smith3美元，如果不同，Smith给John1美元。

第2题

[多选题] Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) Which three statements insert a row into the table? （）

A、INSERT INTO employees VALUES (NULL, 'John', 'smith'); B、INSERT INTO employees (first_name, last_name) VALUES ('John', 'smith'); C、INSERT INTO employees VALUES ('1000, 'John', 'smith'); D、INSERT INTO employees (first_name, last_name, employee_id) VALUES (1000, 'John', 'smith'); E、INSERT INTO employees (employee_id) VALUES (1000); F、INSERT INTO employees ( employee_id, first_name, last_name, ) VALUES (1000, 'John','');

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第3题

[多选题] Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) Which three statements insert a row into the table? （）

A、INSERT INTO employees VALUES (NULL, 'John', 'smith'); B、INSERT INTO employees (first_name, last_name) VALUES ('John', 'smith'); C、INSERT INTO employees VALUES ('1000, 'John', 'smith'); D、INSERT INTO employees (first_name, last_name, employee_id) VALUES (1000, 'John', 'smith'); E、INSERT INTO employees (employee_id) VALUES (1000); F、INSERT INTO employees ( employee_id, first_name, last_name, ) VALUES (1000, 'John','');

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第4题

[单选题] Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) HIRE_DATE DATE Which UPDATE statement is valid?（）

A、UPDATE employees SET first_name = 'John' SET last_name ='Smith' WHERE employee_id = 180; B、UPDATE employees SET first_name = 'John', SET last_name ='Smith' WHERE employee_id = 180; C、UPDATE employees SET first_name = 'John' AND last_name ='Smith' WHERE employee_id = 180; D、UPDATE employees SET first_name = 'John', last_name ='Smith' WHERE employee_id = 180;

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第5题

[] Which three statements inserts a row into the table?（）

A、A. INSERT INTO employees VALUES ( NULL, ‘John’,‘Smith’); B、B. INSERT INTO employees( first_name, last_name) VALUES(‘John’,‘Smith’); C、C. INSERT INTO employees VALUES (‘1000’,‘John’,NULL); D、D. INSERT INTO employees(first_name,last_name, employee_id) VALUES ( 1000, ‘John’,‘Smith’); E、E. INSERT INTO employees (employee_id) VALUES (1000); F、F. INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, ‘John’,‘’);

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第6题

[单选题] 调査表明，使得大学生学习成绩下降的一个重要因素是：很多大学生玩网络游戏。为了提高大学生的学习成绩，学校作出决定：禁止在校园网上玩网络游戏。以下哪项最能对学校的决定进行质疑（）

A、玩网络游戏是不可能禁止的 B、适度的玩网络游戏可以提高大学生的素质 C、大学生主要在网吧玩网络游戏 D、影响学习成绩的不仅是玩网络游戏

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第7题

[多选题] Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) Which three statements insert a row into the table? （）

A、INSERT INTO employees VALUES ( NULL, 'John', 'Smith'); B、INSERT INTO employees( first_name, last_name) VALUES( 'John', 'Smith'); C、INSERT INTO employees VALUES ( '1000', 'John', NULL); D、INSERT INTO employees (first_name, last_name, employee_id) VALUES ( 1000, 'John', 'Smith'); E、INSERT INTO employees (employee_id) VALUES (1000); F、INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, 'John', ' ');

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第8题

[多选题] Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) Which three statements inserts a row into the table? （）

A、INSERT INTO employees VALUES (NULL, 'JOHN','Smith'); B、INSERT INTO employees( first_name, last_name) VALUES ('JOHN','Smith'); C、INSERT INTO employees VALUES ('1000','JOHN','NULL'); D、INSERT INTO employees(first_name,last_name, employee_id) VALUES ('1000, 'john','Smith'); E、INSERT INTO employees (employee_id) VALUES (1000); F、INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, 'john',");

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第9题

[多选题] Examine the structure of the EMPLOYEES table: EMPLOYEE_ID NUMBER Primary Key FIRST_NAME VARCHAR2(25) LAST_NAME VARCHAR2(25) Which three statements inserts a row into the table? （）

A、INSERT INTO employees VALUES (NULL, 'JOHN','Smith'); B、INSERT INTO employees( first_name, last_name) VALUES ('JOHN','Smith'); C、INSERT INTO employees VALUES ('1000','JOHN','NULL'); D、INSERT INTO employees(first_name,last_name, employee_id) VALUES ('1000, 'john','Smith'); E、INSERT INTO employees (employee_id) VALUES (1000); F、INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, 'john',");

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Smith和John玩数字匹配游戏，每个人选择1、2、3，如果数字相同， John给Smith 3美元，如果不同，Smith给John 1美元。 列出收益矩阵。

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Smith和John玩数字匹配游戏，每个人选择1、2、3，如果数字相同， John给Smith 3美元，如果不同，Smith给John 1美元。列出收益矩阵。