水力学主要研究方法有（）。 ["野外试验","理论分析","科学试验","数值模拟和数值计算"]
小学
过堰水流与泄槽轴线一致的岸边溢洪道，称为（） ["竖井式溢洪道","正槽式溢洪道","侧槽式溢洪道牐","虹吸式溢洪道"]
世界上最大的黄金资源拥有国和黄金生产国是（）。 ["南非","中国","俄罗斯","澳大利亚"]
When configuring Cisco Secure ACS to support wireless EAP authentication，which device mustbeconfigured as a AAA client？（） ["Location Appliance","controller-based access points","wireless clients","Wireless Control System","wireless controller"]
冬候鸟
