安全模型明确了安全策略所需的数据结构和技术，下列哪一项最好地描述了安全模型中的“简单安全规则”？
D
暂无解析
We _____ your terms satisfactory and now send you our order for 2 sets of Electric Motors.
Annualleave
Thetimehascome_____wemakeextensiveuseofnuclearenergy.
Howmanytypesofbusinessmeetings?
Thereason____(为什么这事情会这样)isnowclear.Idon'tneedtoexplainitoncemore.
