实验法
（）目标可以说是在教育情境中、在解决的过程中产生，是学生和教师由内在的价值观引导的关于经验生长的方向感。
模式识别
以下说法正确的是（） ["MR2单板可以动态实现任意两个波长的上下","OADM可以由背靠背的OTM组成","D32有光功率检测功能，与SCC板通信并上报告警及性能事件","D32上报性能事件包括有温度和电流等参数"]
Which three statements about the DHCP snooping feature on Cisco Nexus switches are true？ （） [" DHCP snooping commands are not available until the feature is enabled with the feature dhcp- snooping command."," When you enable the DHCP snooping feature， the switch begins building and maintaining the DHCP snooping binding database."," The switch will not validate DHCP messages received or use the DHCP snooping binding database to validate subsequent requests from untrusted hosts until DHCP snooping is enabled globally and for each specific VLAN."," Globally disabling DHCP snooping removes all DHCP snooping configuration on the switch."," Globally disabling DHCP snooping does not remove any DHCP snooping configuration or the configuration of other features that are dependent upon the DHCP snooping feature."]
古文运动
