The three elements of design flood are A: the design flood standards, the design flood volumn and the duration of design flood B: flood peak discharge, total flood volumn and flood hydrograph C: design flood peak discharge, one-day and three-day flood volumn D: design flood peak discharge, total design flood volumn and design flood hydrograph

以下哪些属于常见的DDoS攻击类型（） A: ADNS Query Flood B: BICMP Flood C: CSYN Flood D: DHTTP Get Flood

The flood limiting water level is determined by stages because in each stage of the flood season: A: flood control standards are different B: the operation goals of the reservoir are different C: the flood of the design standards are different D: flood data is insufficient

在C/S环境中，以下哪个是建立一个完整TCP连接的正确顺序？（） A: SYN，SYN/ACK，ACK B: PassiveOpen，ActiveOpen，ACK，ACK C: SYN，ACK/SYN，ACK D: ActiveOpen/PassiveOpen，ACK，ACK

下列攻击方式中不属于DOS攻击的是（）。 A: SYN Flood B: UDP Flood C: 欺骗 D: ICMP Flood

下列攻击中，属于DoS拒绝服务攻击的是（）。 A: AUDP Flood B: BSYN Flood C: CICMP Flood D: DWinNuke攻击

以下各选项中,( )不属于带宽消耗型拒绝服务攻击。 A: 垃圾邮件 B: ICMP Flood C: SYN Flood D: UDP Flood

A heavy flood happened in USA last summer. The losses caused by the flood were beyond _____ .

In the flood story of Yu the Great, the flood is described as a natural phenomenon. A: 正确 B: 错误

中国大学MOOC: In the flood story of Yu the Great, the flood is described as a natural phenomenon.