What are the_characteristics of an effective user interface?
一个有价值的用户界面应该具有那些特性？
Sem_perm.cuid and sem_perm.uid are set to the effective user id of the calling process.
sem_perm . cuid和sem_perm . uid被设置为调用进程的有效用户id。
The effective access the user will get is edit.
用户实际获得的访问权限是编辑访问权。
Effective date: the date that the User first USES this Site.
生效日：用户首次使用本网站的日期。
Effective date: the date that the User first USES this Site.
生效日：用户首次使用本网站的日期。
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