在规定的条件下可燃物质开始持续燃烧所需的最低温度为:
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扑救初级火灾能力指发现火灾后,起火部位员工在多长时间内形成第一灭火力量,火灾确认后,单位多长时间内形成第二灭火力量。()
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
Which statement is true about a Smurf attack?()
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