厚煤层分层开采的采煤方法有（） ["倾斜分层走向长壁上行垮落法；","倾斜分层走向长壁下行垮落法；","水平分层走向长壁采煤法；","斜切分层走向长壁采煤法；","倾斜分层倾斜长壁上行充填法。"]
经纪人
As customers deploy converged services across their business infrastructures， access routers must integrate security services and IP communications. Which router series is designed to achieve this level of integration？（） [" Cisco 7000 Series WAN edge routers"," Cisco 800 Series routers"," Cisco Integrated Services Routers"," Cisco Small Business Series router"]
当今建构主义学习理论的基本观点包括（）。 ["知识观","学习观","学生观","教师观","价值观"]
Which four vertical markets is IPsmartSuite focused?（） [" manufacturing"," legal"," healthcare"," financial"," automotive"," retail"]
破产撤销权
