理论创新主要取决于人的精神自由程度与理论思维能力，与生产力发展水平、以生产关系为主的一切社会关系没有必然联系。
说明句中的词类活用现象
[孟子]曰：“许子冠乎”？[陈相]曰：“冠。”曰：“奚冠？”曰：“冠素。”
下列项目中，至少每月检查一次的是（）。 ["灭火控制器运行情况","启动气体储瓶和驱动气体储瓶压力","驱动气体储瓶充装量","干粉储存装置部件","防护区及干粉储存装置间"]
（）组词词义同语素义不一致。 ["甜头；老化；歌手","勇敢；土改；讥剌","悠久；明亮；忧愁","人均；心灵；科技"]
Which two statements about Cisco Security Management Suite are correct?（） [" It should be implemented in a management VLAN."," Its connection to managed devices should be over a data VLAN."," It is made up of Cisco Security MARS and Clean Access software."," It should be deployed as close to the edge of the network as possible."," It delivers policy administration and enforcement for the Cisco Self-Defending Network."]
简述城市生态问题的表现。
