下面哪一项访问控制模型使用安全标签(securitylabels)?
C
暂无解析
_____alltherepresentativesstillnotthere,themeetingwaspostponedforseveralhours.
Thosefamiliarwitheveningdresswillalways______blackwithelegance.
对白血病诊断和疗效判断最有意义的检查是()
He‘sworkinghard_____.
导致子宫破裂常见的病因是()