大型群众性活动应当组织具有专业消防知识和技能的巡查人员在活动举办前（）h进行一次防火巡查。 0.5。 1。 1.5。 2。
中心角为90°的压力表表盘常采用（）传动机构 齿轮传动。 杠杆传动。 扇形齿轮。 扇形曲面传动。
When designing the Network Admission Control （NAC） Appliance for the Enterprise Campus Network， which of the following requirements would help the designer to narrow down the NAC choices， from Virtual Gateway to Real IP Gateway， or from In-band to Out-band？（） QoS ToS/DSCP values are required to be forwarded transparently。 Device redundancy is required。 Per-user ACL support is required。 Multicast service support is required。
我国实行（）原则，任何宗教都没有超越宪法和法律的特权。 政教分离。 以政代教。 政教合一。 政教分开。
Which unique characteristics of the Data Center Aggregation layer must be considered by an Enterprise Campus designer？（） Layer 3 routing between the Access and Aggregation layers facilities the ability to span VLANsacross multiple access switches， which is a requirement for many server virtualization andclustering technologies.。 “East-west” server-to-server traffic can travel between aggregation modules by way of the core，but backup and replication traffic typically remains within an aggregation module.。 Load balancing， firewall service， and other network service are commonly integrated by the useof service modules that are inserted in the aggregation switched.。 Virtualization tools allow a cost effective approach for redundancy in the network design byusing two or four VDCs from the same physical switch.。
下列说法正确的是哪一项（）
