请简述入侵检测系统的安全性性能指标 。

A. He is not careful.
B. He enjoys music.
C. He does not like music.
D. He is careful with music.

A. They don’t have time to do it.
B. She also thinks it’s a good idea to leave.
C. She thinks they are at home.
D. They are unsure about the time.