2022新闻学与传播学题库记者题库考试题249

1. [单选题]Examine the structure of the EMPLOYEES table:EMPLOYEE_ID NUMBER Primary KeyFIRST_NAME VARCHAR2(25)LAST_NAME VARCHAR2(25)HIRE_DATE DATEWhich 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

2. [单选题]If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.

A. pushed ahead
B. towed alongside
C. towed astern
D. Any of the above

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