事故发生后，调查组应迅速到现场进行及时、全面、准确和客观的勘察，主要包括（）。

A．现场分析

B．现场笔录

C．现场拍照

D．现场制定措施

E．现场绘图

Most computer systems are (16) to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be (17) to an outsider attack by preventing.
(18) from outside can still be vulnerable to the insider attacks accomplished by abusive usage of (19) users. Detecting such abusive usage as well as attacks by outsides not only provides information on damage assessment, but also helps to prevent future attacks. These attacks are usually (20) by tools referred to as Intrusion Detection Systems.

A．searched

B．checked

C．tested

D．detected