Can you provide us ________ some information ________ the computer?

A．for; with

B．with; about

C．about; with

D．with; with

下面哪些防护属于主动防护（）.

A.高千伏摄影

B.佩戴铅围裙

C.高毫安摄影

D.影像增强技术

E.高速增感屏