事故具有哪些基本特征？
输送机的使用有哪些安全要求？
You are developing a Windows Communication Foundation (WCF) service that reads messages from a public non-transactional MSMQ queue.You need to configure the service to read messages from the failed-delivery queue.Which URI should you specify in the endpoint configuration settings of the service?（） [" net.msmq:\/\/localhost\/msmq$FailedMessages"," net.msmq:\/\/localhost\/msmq$DeadLetter"," net.msmq:\/\/localhost\/system$DeadXact"," net.msmq:\/\/localhost\/system$DeadLetter"]
以下说法正确的是（） ["发泡陶瓷有强度高、防火、耐高温、耐老化、耐腐蚀、隔热、抗热震、吸水率低等特点。","研制的发泡陶瓷保温板导热系数为0.06W\/（m·K），接近水泥基复合保温砂浆。","发泡陶瓷保温板作为保温材料适合夏热冬冷地区的防火性能佳、质量通病少、与建筑同寿命的外墙外保温技术，适用于常规无机保温材料外保温系统的防火隔离带技术。","陶瓷保温板易吸水，常被用于建筑行业中。"]
简要说明系统分析阶段的主要工作步骤。
荷兰病
