题目内容

极限推焦电流一般为()。

A. 300A
B. 400A
C. 500A
D. 600A

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记录应当保持清洁,不得()和()。

A number of applications issue the following SQL statement:SELECT d.deptno, e.empno, e.salary FROM department d INNER JOIN employee e ON d.deptno = e.deptnoA database administrator wishes to store this query within the database. Which of the following database objects can be used to accomplish this?()

Alias
B. View
C. Schema
D. Trigger

国际田径重大赛事主要有哪些?

农药残留毒性

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