中国近代独特的（）元经济格局是促使自然经济结构解体的深刻经济因素。
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下列关于消防控制设备对有管网的卤代烷、二氧化碳等灭火系统控制、显示功能的描述中，不正确的是（）。
A. 控制系统的紧急启动和切断装置
B. 由火灾探测器联动的控制设备应具有30秒可调的延时装置
C. 在报警、喷射各阶段，控制室应有相应的声、光报警信号并能手动切除声响信号
D. 在延时阶段，应能人工关闭防火门、窗、停止通风、空气调节系统，关闭有关部位的防火阀
An SVI has been configured on a device. Which two statements are true about a switched virtual interface （SVI）？（）
An SVI is normally created for the default VLAN （VLAN1） to permit remote switch administration.
B. Multiple SVIs can be associated with a VLA
C. SVI is another name for a routed port.
D. An SVI is created by entering the no switchport command in interface configuration mode.
E. An SVI provides a default gateway for a VLA
课程是实现学校教育目标的（）。
A. 必要条件
B. 前提条件
C. 基本途径
D. 必要手段
Which two statements are true about IBGP neighbor relationships?（）
A. The BGP split - horizon rule specifies that routes learned via EBGP are never propagated to other IBGP peers.
B. The BGP split horizon rule specifies that routes learned via IBGP are never propagated to other IBGP peers.
C. A full - mesh IBGP requires that neighbor relationships be established between a ll BGP enabled routers in the autonomous system.
D. IBGP neighbors must be in different autonomous systems.
E. An EGP or static routing is required between IBGP neighbors.
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