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【单选题】
20 ） 下列 SQL 语句中 ， 能够实现 “ 收回用户 WANG 对学生表 （ STUDENT ） 中学号 （ XH ） 的修改权 ” 这一功能的是A.
) GRANT UPDATE ( XH ) ON STUDENT TO WANG
B.
) GRANT UPDATE ( XH ) ON TABLE TO WANG
C.
) REVOKE UPDATE ( XH ) ON STUDENT FROM WANG
E.
) REVOKE UPDATE ( XH ) ON TABLE TO WANG
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