下面哪类访问控制模型是基于安全标签实现的?
A、自主访问控制B
暂无解析
Johnsonwas________unknownbeforerunningforthepresidency.
ModernEnglishvocabularydevelopsthroughthefollowingchannelsEXCEPT______.
Theconclusionfromthestudyisnotdefinite;itisjust________.
TheIndo-EuropeanlanguagefamilyismadeupofthelanguagesofthefollowingEXCEPT______.
Ifpaymentisnotreceived,legalactionwillbeouronly________.
