项目投资决策中不确定性分析的方法主要有（）。 ["线性分析","敏感性分析","情景分析","盈亏平衡分析"]
活性污泥哪些特性使其在净化污水中起重要作用？
“关于认真学习贯彻国务院《城市生活无着的流浪乞讨人员救助管理办法》和民政部《城市生活无着的流浪乞讨人员救助管理办法实施细则》的通知”在旅客列车内发现无票流浪乞讨人员时，列车长应编制客运记录交列车运行前方县、市所在地车站。
Which of the following are true regarding bridges and switches?（） [" Bridges are faster than switches because they have fewer ports."," A switch is a multiport bridge."," Bridges and switches learn MAC addresses by examining the source MAC address of each frame received."," A bridge will forward a broadcast but a switch will not."," Bridges and switches increase the size of a collision domain."]
是谁写的以弗所书？
课堂管理包括（）、（）和（）的策略。
