常用采煤机截齿有哪几种类型？适用范围如何？

A. 1分钟；3分钟
B. 3分钟；5分钟
C. 5分钟；10分钟
D. 10分钟；15分钟

A. It sends ping requests in segments of an invalid size
B. It intercepts the third step in a TCP three-way handshake to hijack a session
C. It sends ping requests to a subnet， requesting that devices on that subnet send ping replies to a targetsystem
D. It uses Trojan horse applications to create a distributed collection of "zombie" computers， which can beused to launch a coordinated DDoS attack

A. 钩虫
B. 肺吸虫
C. 蛔虫
D. 血吸虫
E. 姜片吸虫