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单选题
The IT department is usually the first department to move.
A
Right.
B
Wrong.
C
Doesn’t say.
参考答案
参考解析
解析：
句意：IT部门通常最先搬迁。文中并未体现。
句意：IT部门通常最先搬迁。文中并未体现。
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单选题在执行语句SELECT department_id FROM employees，departments WHERE employees.department_id= departments.department_id；时报错，原因是（）。A
没有给表employees和表departments加别名B
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考题
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SELECT last_name, department_name FROM employees NATURAL JOIN departments;B
SELECT last_name, department_name FROM employees JOIN departments ;C
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考题
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考题
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the chief engineerB
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考题
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