1937年“七·七”卢沟桥事变后,日寇对南开狂轰滥炸,南开高等学府化为灰烬,其中学部师生流亡到重庆,改南渝中学为重庆南开中学,()亲任校长,严守南开“公允公能”的校训,将南开中学办成抗战时期全国5大重点中学之一。
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The user HR owns the EMP table. The user HR grants privileges to the user SCOTT by using this command: SQL> GRANT SELECT,INSERT,UPDATE ON emp TO scott WITH GRANT OPTION; The user SCOTT executes this command to grant privileges to the user JIM: SQL> GRANT SELECT,INSERT,UPDATE ON hr.emp TO jim; Now, the user HR decides to revoke privileges from JIM using this command: SQL> REVOKE SELECT,INSERT,UPDATE ON emp FROM jim; Which statement is true after HR issues the REVOKE command()
A. The command fails because SCOTT still has privileges.
B. The command succeeds and privileges are revoked from JI
C. The command fails because HR cannot revoke the privileges from JI
D. The command succeeds and only HR has the privilege to perform the SELECT, INSERT, and UPDATEoperations on the EMP table.
合金模具钢是制造形状简单,尺寸较小的模具用钢。
A. 正确
B. 错误
输变电设施大修是指设施在()检修计划上安排的大修。
A. 年度
B. 季度
C. 月度
D. 半年
网师园万卷堂前砖雕门楼刻有两出传统戏文,一出为(),一出为()。