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简述股票投资决策的基本方法。

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标准双币卡如何办理免息分期付款？

Examine the structure of the EMPLOYEES and DEPARTMENTS tables: EMPLOYEES EMPLOYEE_ID NUMBER DEPARTMENT_ID NUMBER MANAGER_ID NUMBER LAST_NAME VARCHAR2(25) DEPARTMENTS DEPARTMENT_ID NUMBER MANAGER_ID NUMBER DEPARTMENT_NAME VARCHAR2(35) LOCATION_ID NUMBER You want to create a report displaying employee last names, department names, and locations. Which query should you use?（）

A. SELECT e.last_name, d. department_name, d.location_id FROM employees e NATURAL JOIN departments D USING department_id ;
B. SELECT last_name, department_name, location_id FROM employees NATURAL JOIN departments WHERE e.department_id =d.department_id;
C. SELECT e.last_name, d.department_name, d.location_id FROM employees e NATURAL JOIN departments d;
D. SELECT e.last_name, d.department_name, d.location_id FROM employees e JOIN departments d USING (department_id )

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接头与接头相互关系分为（）和（）。

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按照安装地点划分，下列（）与其他三项不属于同一类别。

A. GW7-252
B. GW5-126
C. GN19-10
D. GW4-126

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