农业产业化经营
CiscoWorks IP Telephony Environment Monitor (ITEM) provides what two serviceability capabilities?（） ["Tool to collect syslog messages from multiple sources ","User Tracking to track IP telephones ","Diagnostic trace tools to analyze connectivity ","Monitoring of Cisco voice elements ","Problem alerts for operations personnel"]
试分析电脱水器出现低电压/高电流的原因及处理措施。
When a check point occurs the （）. （）. and （） are synchronized. ["data files","control files","redo log files","parameter files","archive log file"]
下列养护工程项目属于改建工程的是（）。 ["整线整段提高公路技术等级","加宽、加高大中型桥梁","水泥混凝土路面病害处治后，补强或改造为沥青混凝土路面","通信、监控、收费、供配电设施的更新"]
常见的的线性结构有（）、（）和（）等。等其主要特征为各个结点之间“先后”有序。
