The man，suspected________having stolen the jewels of the shop，was missing last night，although he was watched over by the police.[ ]

A．of  

B．for

C．about  

D．with

尽量利用现有统计资料及有关企业、行业的安全规范和标准，体现了预警评价指标的构建的（）原则。

A.科学性

B.可操作性

C.引导性

D.预见性