试述现代达尔文学说的内容。
四体二用
渠化工程枢纽布置、初步设计阶段应搜集的基本资料中，下列4种中，哪一种是必需的？（） ["应搜集渠化河段环保现状及评价资料","应搜集与施工方案、施工组织有关资料","应搜集渠化河段沿岸城镇，工农业生产和对外交通现状及发展规划等资料","应搜集编制工程概算有关定额、地方材料及设备价格等资"]
Which two statements about Cisco Security Management Suite are correct？ （） [" It should be implemented in a management VLAN."," Its connection to managed devices should be over a data VLAN."," It is made up of Cisco Security MARS and Clean Access software."," It should be deployed as close to the edge of the network as possible."," It delivers policy administration and enforcement for the Cisco Self-Defending Network."]
直觉观察时期教育研究的特点。
HIPO图的主要内容是什么？
