过断层.顶板破碎及煤壁片帮严重时应（）做。 ["视情况可超前移架，及时支护，移到作业规程规定的最小控顶距","采用带压移架法，同时打开降柱及移架手把，及时调整降柱手把，移架到规定步后应立即升柱","移架后，再给液保证支架初撑力","梁端有冒漏征兆或在冒顶下移架，及时汇报班组长，采用必要措施管理后，再移架"]
（）是输送渠道水流跨越河流、渠道、道路、山谷等架空式输水建筑物。 ["渡槽","涵洞","倒虹吸","跌水"]
Which three benefits are provided by the implementation of cisco c-series servers into A virtualized data center environment?（） ["blade-based deployments","enterprise-focused design","infiniband networking","cost-effiective server","storage-intensive platform","extended memory sipport"]
What is the maximum recommended height at which a Cisco Aironet 1000 Series controller-based accesspoint should be mounted when using integrated antennas？（） ["8 feet [2.4 meters]","16 feet [4.8 meters]","24 feet [7.3 meters]","40 feet [12.1 meters]"]
试述供应链环境下业务流程重组的内涵及特点。
房地产投资的风险有哪些？
