图纸中没有要求进行探伤检验的焊接部位,每个子项完成后,由()提出申请,车间组织有()、()、()共同对该子项的焊接质量进行统一验收,并填写焊接质量验收单及留取()并存档。
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极限推焦电流一般为()。
A. 300A
B. 400A
C. 500A
D. 600A
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