【C9】A．denyB．refuseC．admitD．acknowledge

A．confessB．realizeC．admitD．reveal

A．recoverB．receiveC．admitD．accept

【C8】A．forgetB．refuseC．missD．ignore

【C9】A．denyB．refuseC．ignoreD．destroy

61._________A. declineB. denyC. admitD. reject

授予的权限可以由DBA或其他授权者使用（)语句撤消。A DenyB RevokeC GrantD