题目内容

杜牧的诗歌特点与他的性格有关,而且他还是想建功立业的。以下对杜牧诗歌特点描述正确的选项是()。

A. 俊爽
B. 轻快
C. 借故讽今
D. 豪横
E. 苦呤

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在漫长的地质发展过程中,地壳在内外力地质作用下,不断运动演变,所遗留下来的种种构造形态称为()。

A. 地质构造
B. 产状
C. 褶皱构造
D. 断裂构造

教师在随后的教学中用到学生前面提供的正确结论,或者教师对学生提供的正确答案做进一步的发挥。这种理答方式称为()

A. 提示
B. 转引
C. 延伸
D. 回问

Examine the structure of the EMPLOYEES and DEPARTMENTS tables: EMPLOYEESColumn name Data type Remarks EMPLOYEE_ID NUMBER NOT NULL, Primary Key EMP_NAME VARCHAR2 (30) JOB_ID VARCHAR2 (20) SALARY NUMBER MGR_ID NUMBER References EMPLOYEE_ID COLUMN DEPARTMENT ID NUMBER Foreign key to DEPARTMENT ID column of the DEPARTMENTS table DEPARTMENTSColumn name Data type Remarks DEPARTMENT_ID NUMBER NOT NULL, Primary Key DEPARTMENT_NAME VARCHAR2(30) MGR_ID NUMBER References MGR_ID column of the EMPLOYEES table Evaluate this SQL statement: SELECT employee_id, e.department_id, department_name, salary FROM employees e, departments d WHERE e. department_id = d.department_id; Which SQL statement is equivalent to the above SQL statement? ()

A. SELECT employee_id, department_id, department_name, salary FROM employees WHERE department_id IN (SELECT department_id FROM departments);
B. SELECT employee_id, department_id, department_name, salary FROM employees NATURAL JOIN departments;
C. SELECT employee_id, d.department_id, department_name, salary FROM employees e JOIN departments d ON e.department _ id = d. department_id;
D. SELECT employee_id, department_id, department_name, Salary FROM employees JOIN departments USING (e.department_id, d.department_id)

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